diff --git a/arch/common/eventloop_common.c b/arch/common/eventloop_common.c
index 8d607dbe3..f0305a6c4 100644
--- a/arch/common/eventloop_common.c
+++ b/arch/common/eventloop_common.c
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  *    Copyright 2022 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include "eventloop_common.h"
diff --git a/arch/posix/eventloop_posix.c b/arch/posix/eventloop_posix.c
index 13bf09616..32c129cf9 100644
--- a/arch/posix/eventloop_posix.c
+++ b/arch/posix/eventloop_posix.c
@@ -4,6 +4,7 @@
  *
  *    Copyright 2021 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
  *    Copyright 2021 (c) Fraunhofer IOSB (Author: Jan Hermes)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include "eventloop_posix.h"
diff --git a/arch/posix/eventloop_posix.h b/arch/posix/eventloop_posix.h
index 96d05e469..63116828e 100644
--- a/arch/posix/eventloop_posix.h
+++ b/arch/posix/eventloop_posix.h
@@ -6,6 +6,7 @@
  *    Copyright 2021 (c) Christian von Arnim, ISW University of Stuttgart (for VDW and umati)
  *    Copyright 2021 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
  *    Copyright 2021 (c) Fraunhofer IOSB (Author: Jan Hermes)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_EVENTLOOP_POSIX_H_
diff --git a/arch/posix/eventloop_posix_http.c b/arch/posix/eventloop_posix_http.c
index c8fd2defc..4f7708ac2 100644
--- a/arch/posix/eventloop_posix_http.c
+++ b/arch/posix/eventloop_posix_http.c
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  *    Copyright 2023 (c) Fraunhofer IOSB (Author: Noel Graf)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include "eventloop_posix_http_internal.h"
diff --git a/arch/posix/eventloop_posix_http_client.c b/arch/posix/eventloop_posix_http_client.c
index fa4e4f0d7..2b29911e7 100644
--- a/arch/posix/eventloop_posix_http_client.c
+++ b/arch/posix/eventloop_posix_http_client.c
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  *    Copyright 2023 (c) Fraunhofer IOSB (Author: Noel Graf)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include "eventloop_posix_http_internal.h"
diff --git a/arch/posix/eventloop_posix_http_compression.c b/arch/posix/eventloop_posix_http_compression.c
index 01b818996..4e4375c24 100644
--- a/arch/posix/eventloop_posix_http_compression.c
+++ b/arch/posix/eventloop_posix_http_compression.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "eventloop_posix_http_compression.h"
 
diff --git a/arch/posix/eventloop_posix_http_compression.h b/arch/posix/eventloop_posix_http_compression.h
index 5cca39899..a88e27fa0 100644
--- a/arch/posix/eventloop_posix_http_compression.h
+++ b/arch/posix/eventloop_posix_http_compression.h
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #ifndef EVENTLOOP_POSIX_HTTP_COMPRESSION_H_
 #define EVENTLOOP_POSIX_HTTP_COMPRESSION_H_
diff --git a/arch/posix/eventloop_posix_http_internal.h b/arch/posix/eventloop_posix_http_internal.h
index 5e92b23d9..e033c68b2 100644
--- a/arch/posix/eventloop_posix_http_internal.h
+++ b/arch/posix/eventloop_posix_http_internal.h
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  *    Copyright 2023 (c) Fraunhofer IOSB (Author: Noel Graf)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef EVENTLOOP_POSIX_HTTP_INTERNAL_H_
diff --git a/arch/posix/eventloop_posix_http_parser.c b/arch/posix/eventloop_posix_http_parser.c
index 00a155ba6..3fbeaa1b7 100644
--- a/arch/posix/eventloop_posix_http_parser.c
+++ b/arch/posix/eventloop_posix_http_parser.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "eventloop_posix_http_parser.h"
 
diff --git a/arch/posix/eventloop_posix_http_parser.h b/arch/posix/eventloop_posix_http_parser.h
index 34be75b90..59b3ec812 100644
--- a/arch/posix/eventloop_posix_http_parser.h
+++ b/arch/posix/eventloop_posix_http_parser.h
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #ifndef EVENTLOOP_POSIX_HTTP_PARSER_H_
 #define EVENTLOOP_POSIX_HTTP_PARSER_H_
diff --git a/arch/posix/eventloop_posix_http_server.c b/arch/posix/eventloop_posix_http_server.c
index 6c5046953..fc2011cd7 100644
--- a/arch/posix/eventloop_posix_http_server.c
+++ b/arch/posix/eventloop_posix_http_server.c
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  *    Copyright 2023 (c) Fraunhofer IOSB (Author: Noel Graf)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include "eventloop_posix_http_internal.h"
diff --git a/arch/posix/eventloop_posix_lws.c b/arch/posix/eventloop_posix_lws.c
index f55f00a95..1f063660b 100644
--- a/arch/posix/eventloop_posix_lws.c
+++ b/arch/posix/eventloop_posix_lws.c
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  *    Copyright 2025 (c) Fraunhofer IOSB (Author: Noel Graf)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 /* Suppress the warning 'redefinition of typedef' in the libwebsockets library.
diff --git a/arch/posix/eventloop_posix_lws.h b/arch/posix/eventloop_posix_lws.h
index b105ae4f0..d711d9e54 100644
--- a/arch/posix/eventloop_posix_lws.h
+++ b/arch/posix/eventloop_posix_lws.h
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  *    Copyright 2025 (c) Fraunhofer IOSB (Author: Noel Graf)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_EVENTLOOP_LIBWEBSOCKETS_H_
diff --git a/arch/posix/eventloop_posix_mqtt_lws.c b/arch/posix/eventloop_posix_mqtt_lws.c
index 0cff8f9e9..5d3428a0d 100644
--- a/arch/posix/eventloop_posix_mqtt_lws.c
+++ b/arch/posix/eventloop_posix_mqtt_lws.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 /* MQTT ConnectionManager implemented with the libwebsockets MQTT role. */
 
diff --git a/arch/posix/eventloop_posix_websocket_lws.c b/arch/posix/eventloop_posix_websocket_lws.c
index c17229af2..325022b7e 100644
--- a/arch/posix/eventloop_posix_websocket_lws.c
+++ b/arch/posix/eventloop_posix_websocket_lws.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/plugin/eventloop.h>
 #include "eventloop_posix_lws.h"
diff --git a/deps/cj5.c b/deps/cj5.c
index d0a393819..22f629d59 100644
--- a/deps/cj5.c
+++ b/deps/cj5.c
@@ -2,6 +2,7 @@
 //
 // Copyright (c) 2020 Sepehr Taghdisian
 // Copyright (c) 2022, 2024 Julius Pfrommer
+// Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/examples/lws/server_lws_http_client.c b/examples/lws/server_lws_http_client.c
index 0c612f84f..2e6f37713 100644
--- a/examples/lws/server_lws_http_client.c
+++ b/examples/lws/server_lws_http_client.c
@@ -1,5 +1,8 @@
 /* This work is licensed under a Creative Commons CCZero 1.0 Universal License.
- * See http://creativecommons.org/publicdomain/zero/1.0/ for more information. */
+ * See http://creativecommons.org/publicdomain/zero/1.0/ for more information.
+ *
+ * Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/plugin/eventloop.h>
 #include <open62541/plugin/log_stdout.h>
diff --git a/examples/lws/server_lws_http_client_post.c b/examples/lws/server_lws_http_client_post.c
index 9fcc7102d..f88c54e72 100644
--- a/examples/lws/server_lws_http_client_post.c
+++ b/examples/lws/server_lws_http_client_post.c
@@ -1,5 +1,8 @@
 /* This work is licensed under a Creative Commons CCZero 1.0 Universal License.
-* See http://creativecommons.org/publicdomain/zero/1.0/ for more information. */
+ * See http://creativecommons.org/publicdomain/zero/1.0/ for more information.
+ *
+ * Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/plugin/eventloop.h>
 #include <open62541/plugin/log_stdout.h>
diff --git a/include/open62541/client.h b/include/open62541/client.h
index 0ad76fc1a..445161910 100644
--- a/include/open62541/client.h
+++ b/include/open62541/client.h
@@ -15,6 +15,7 @@
  *    Copyright 2020 (c) Christian von Arnim, ISW University of Stuttgart
  *    Copyright 2022 (c) Linutronix GmbH (Author: Muddasir Shakil)
  *    Copyright 2025 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_CLIENT_H_
diff --git a/include/open62541/common.h b/include/open62541/common.h
index 72977fe35..96c0982d0 100644
--- a/include/open62541/common.h
+++ b/include/open62541/common.h
@@ -7,6 +7,7 @@
  *    Copyright 2016-2017 (c) Stefan Profanter, fortiss GmbH
  *    Copyright 2017 (c) Florian Palm
  *    Copyright 2020 (c) HMS Industrial Networks AB (Author: Jonas Green)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_COMMON_H_
diff --git a/include/open62541/plugin/eventloop.h b/include/open62541/plugin/eventloop.h
index d782e160b..600d49ad4 100644
--- a/include/open62541/plugin/eventloop.h
+++ b/include/open62541/plugin/eventloop.h
@@ -4,6 +4,7 @@
  *
  *    Copyright 2021 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
  *    Copyright 2021 (c) Fraunhofer IOSB (Author: Jan Hermes)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_EVENTLOOP_H_
diff --git a/include/open62541/server.h b/include/open62541/server.h
index 6b79158f8..9b2f818bc 100644
--- a/include/open62541/server.h
+++ b/include/open62541/server.h
@@ -14,6 +14,7 @@
  *    Copyright 2020-2022 (c) Christian von Arnim, ISW University of Stuttgart  (for VDW and umati)
  *    Copyright 2025 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  *    Copyright 2025-2026 (c) o6 Automation GmbH (Author: Andreas Ebner)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_SERVER_H_
diff --git a/include/open62541/types.h b/include/open62541/types.h
index 0069c3229..970b84e4b 100644
--- a/include/open62541/types.h
+++ b/include/open62541/types.h
@@ -13,6 +13,7 @@
  *    Copyright 2017 (c) Thomas Stalder, Blue Time Concept SA
  *    Copyright 2023 (c) Fraunhofer IOSB (Author: Andreas Ebner)
  *    Copyright 2025 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_TYPES_H_
diff --git a/plugins/ua_accesscontrol_default.c b/plugins/ua_accesscontrol_default.c
index 99786a68c..a0e421a14 100644
--- a/plugins/ua_accesscontrol_default.c
+++ b/plugins/ua_accesscontrol_default.c
@@ -4,6 +4,7 @@
  *    Copyright 2016-2017 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
  *    Copyright 2017 (c) Stefan Profanter, fortiss GmbH
  *    Copyright 2019 (c) HMS Industrial Networks AB (Author: Jonas Green)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/plugin/accesscontrol_default.h>
diff --git a/plugins/ua_config_default.c b/plugins/ua_config_default.c
index a7e6c8e12..efc09aea2 100644
--- a/plugins/ua_config_default.c
+++ b/plugins/ua_config_default.c
@@ -13,6 +13,7 @@
  *    Copyright 2020 (c) Wind River Systems, Inc.
  *    Copyright 2024 (c) Siemens AG (Authors: Tin Raic, Thomas Zeschg)
  *    Copyright 2026 (c) o6 Automation GmbH (Author: Andreas Ebner)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/plugin/accesscontrol_default.h>
diff --git a/plugins/ua_config_json.c b/plugins/ua_config_json.c
index 5d66f14e4..8d25dfcff 100644
--- a/plugins/ua_config_json.c
+++ b/plugins/ua_config_json.c
@@ -4,6 +4,7 @@
  *    Copyright 2023 (c) Fraunhofer IOSB (Author: Noel Graf)
  *    Copyright 2025 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  *    Copyright 2026 (c) o6 Automation GmbH (Author: Moritz Bruder)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/plugin/log.h>
diff --git a/src/client/ua_client.c b/src/client/ua_client.c
index dd563fe10..df918df1d 100644
--- a/src/client/ua_client.c
+++ b/src/client/ua_client.c
@@ -18,6 +18,7 @@
  *    Copyright 2020 (c) Christian von Arnim, ISW University of Stuttgart
  *    Copyright 2021 (c) Fraunhofer IOSB (Author: Jan Hermes)
  *    Copyright 2022 (c) Linutronix GmbH (Author: Muddasir Shakil)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/transport_generated.h>
diff --git a/src/client/ua_client_connect.c b/src/client/ua_client_connect.c
index a17e70220..db8d18293 100644
--- a/src/client/ua_client_connect.c
+++ b/src/client/ua_client_connect.c
@@ -6,6 +6,7 @@
  *    Copyright 2017-2019 (c) Fraunhofer IOSB (Author: Mark Giraud)
  *    Copyright 2025 (c) Siemens AG (Author: Tin Raic)
  *    Copyright 2025 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/types.h>
diff --git a/src/client/ua_client_connect_http.c b/src/client/ua_client_connect_http.c
index 3141f46e1..e6e3c546f 100644
--- a/src/client/ua_client_connect_http.c
+++ b/src/client/ua_client_connect_http.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "ua_client_internal.h"
 
diff --git a/src/client/ua_client_internal.h b/src/client/ua_client_internal.h
index fd44d8d0c..710769c63 100644
--- a/src/client/ua_client_internal.h
+++ b/src/client/ua_client_internal.h
@@ -8,6 +8,7 @@
  *    Copyright 2016-2017 (c) Florian Palm
  *    Copyright 2017 (c) Stefan Profanter, fortiss GmbH
  *    Copyright 2017 (c) Mark Giraud, Fraunhofer IOSB
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_CLIENT_INTERNAL_H_
diff --git a/src/pubsub/ua_pubsub_networkmessage_json.c b/src/pubsub/ua_pubsub_networkmessage_json.c
index b87529cb3..bd12b4081 100644
--- a/src/pubsub/ua_pubsub_networkmessage_json.c
+++ b/src/pubsub/ua_pubsub_networkmessage_json.c
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  * Copyright (c) 2019 Fraunhofer IOSB (Author: Lukas Meling)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/types.h>
diff --git a/src/server/ua_server.c b/src/server/ua_server.c
index 8132210fb..c9127aa98 100644
--- a/src/server/ua_server.c
+++ b/src/server/ua_server.c
@@ -18,6 +18,7 @@
  *    Copyright 2021 (c) Fraunhofer IOSB (Author: Jan Hermes)
  *    Copyright 2022-2025 (c) Fraunhofer IOSB (Author: Andreas Ebner)
  *    Copyright 2024 (c) Fraunhofer IOSB (Author: Noel Graf)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include "ua_server_internal.h"
diff --git a/src/server/ua_server_binary.c b/src/server/ua_server_binary.c
index fb7d19611..f586d1a06 100644
--- a/src/server/ua_server_binary.c
+++ b/src/server/ua_server_binary.c
@@ -14,6 +14,7 @@
  *    Copyright 2017 (c) Mark Giraud, Fraunhofer IOSB
  *    Copyright 2019 (c) Kalycito Infotech Private Limited
  *    Copyright 2023 (c) Hilscher Gesellschaft für Systemautomation mbH (Author: Phuong Nguyen)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/types.h>
diff --git a/src/server/ua_server_binary_tcp.c b/src/server/ua_server_binary_tcp.c
index 0b8494b3e..b4b53e61f 100644
--- a/src/server/ua_server_binary_tcp.c
+++ b/src/server/ua_server_binary_tcp.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "ua_server_internal.h"
 #include "mp_printf.h"
diff --git a/src/server/ua_server_config.c b/src/server/ua_server_config.c
index a5cf2f621..2202f0a88 100644
--- a/src/server/ua_server_config.c
+++ b/src/server/ua_server_config.c
@@ -4,6 +4,7 @@
  *
  *    Copyright 2019 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
  *    Copyright 2019 (c) HMS Industrial Networks AB (Author: Jonas Green)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/server.h>
diff --git a/src/server/ua_server_http.c b/src/server/ua_server_http.c
index c38dfd5b3..0ac9ec3d8 100644
--- a/src/server/ua_server_http.c
+++ b/src/server/ua_server_http.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "../ua_types_encoding_binary.h"
 #include "ua_server_internal.h"
diff --git a/src/server/ua_server_internal.h b/src/server/ua_server_internal.h
index 832af1dfb..af77a34f4 100644
--- a/src/server/ua_server_internal.h
+++ b/src/server/ua_server_internal.h
@@ -14,6 +14,7 @@
  *    Copyright 2019 (c) HMS Industrial Networks AB (Author: Jonas Green)
  *    Copyright 2021-2025 (c) Fraunhofer IOSB (Author: Andreas Ebner)
  *    Copyright 2022 (c) Christian von Arnim, ISW University of Stuttgart (for VDW and umati)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_SERVER_INTERNAL_H_
diff --git a/src/server/ua_server_utils.c b/src/server/ua_server_utils.c
index 549444be5..10698df40 100644
--- a/src/server/ua_server_utils.c
+++ b/src/server/ua_server_utils.c
@@ -8,6 +8,7 @@
  *    Copyright 2017 (c) Florian Palm
  *    Copyright 2017-2018 (c) Stefan Profanter, fortiss GmbH
  *    Copyright 2017 (c) Julian Grothoff
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include "ua_server_internal.h"
diff --git a/src/server/ua_server_ws.c b/src/server/ua_server_ws.c
index 5ef2dfbe0..a87e36297 100644
--- a/src/server/ua_server_ws.c
+++ b/src/server/ua_server_ws.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "ua_server_internal.h"
 #include "mp_printf.h"
diff --git a/src/server/ua_services.c b/src/server/ua_services.c
index 9aceb172e..216b35342 100644
--- a/src/server/ua_services.c
+++ b/src/server/ua_services.c
@@ -14,6 +14,7 @@
  *    Copyright 2017 (c) Mark Giraud, Fraunhofer IOSB
  *    Copyright 2019 (c) Kalycito Infotech Private Limited
  *    Copyright 2023 (c) Hilscher Gesellschaft für Systemautomation mbH (Author: Phuong Nguyen)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 /* This file contains the service invocation logic that is called from all
diff --git a/src/server/ua_services.h b/src/server/ua_services.h
index 0f74218c9..dc3eb63b2 100644
--- a/src/server/ua_services.h
+++ b/src/server/ua_services.h
@@ -10,6 +10,7 @@
  *    Copyright 2015 (c) Christian Fimmers
  *    Copyright 2015-2016 (c) Oleksiy Vasylyev
  *    Copyright 2017 (c) Stefan Profanter, fortiss GmbH
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_SERVICES_H_
diff --git a/src/server/ua_services_subscription.c b/src/server/ua_services_subscription.c
index 3e64fad52..8d13ba9d8 100644
--- a/src/server/ua_services_subscription.c
+++ b/src/server/ua_services_subscription.c
@@ -15,6 +15,7 @@
  *    Copyright 2018 (c) Fabian Arndt, Root-Core
  *    Copyright 2017-2019 (c) HMS Industrial Networks AB (Author: Jonas Green)
   *   Copyright 2026 (c) o6 Automation GmbH (Author: Andreas Ebner)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include "ua_server_internal.h"
diff --git a/src/server/ua_session.c b/src/server/ua_session.c
index 9f10f4d87..8742e5108 100644
--- a/src/server/ua_session.c
+++ b/src/server/ua_session.c
@@ -5,6 +5,7 @@
  *    Copyright 2018 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
  *    Copyright 2018 (c) Thomas Stalder, Blue Time Concept SA
  *    Copyright 2019 (c) HMS Industrial Networks AB (Author: Jonas Green)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include "ua_session.h"
diff --git a/src/server/ua_session.h b/src/server/ua_session.h
index b8a968eb6..d59e452b0 100644
--- a/src/server/ua_session.h
+++ b/src/server/ua_session.h
@@ -4,6 +4,7 @@
  *
  *    Copyright 2018 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
  *    Copyright 2019 (c) HMS Industrial Networks AB (Author: Jonas Green)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_SESSION_H_
diff --git a/src/server/ua_subscription.c b/src/server/ua_subscription.c
index 1f85a88b3..891b58db7 100644
--- a/src/server/ua_subscription.c
+++ b/src/server/ua_subscription.c
@@ -18,6 +18,7 @@
  *    Copyright 2019 (c) HMS Industrial Networks AB (Author: Jonas Green)
  *    Copyright 2020-2021 (c) Christian von Arnim, ISW University of Stuttgart (for VDW and umati)
  *    Copyright 2026 (c) o6 Automation GmbH (Author: Andreas Ebner)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include "ua_server_internal.h"
diff --git a/src/ua_securechannel.c b/src/ua_securechannel.c
index c04800b91..06b5a1724 100644
--- a/src/ua_securechannel.c
+++ b/src/ua_securechannel.c
@@ -12,6 +12,7 @@
  *    Copyright 2018-2019 (c) HMS Industrial Networks AB (Author: Jonas Green)
  *    Copyright 2025 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  *    Copyright 2026 (c) o6 Automation GmbH (Author: Andreas Ebner)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/types.h>
diff --git a/src/ua_securechannel.h b/src/ua_securechannel.h
index e4e6cc189..50501f432 100644
--- a/src/ua_securechannel.h
+++ b/src/ua_securechannel.h
@@ -6,6 +6,7 @@
  *    Copyright 2017 (c) Florian Palm
  *    Copyright 2017 (c) Stefan Profanter, fortiss GmbH
  *    Copyright 2017 (c) Mark Giraud, Fraunhofer IOSB
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_SECURECHANNEL_H_
diff --git a/src/ua_securechannel_http.c b/src/ua_securechannel_http.c
index 43c50ac51..75e01e147 100644
--- a/src/ua_securechannel_http.c
+++ b/src/ua_securechannel_http.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "ua_securechannel.h"
 #include "ua_types_encoding_binary.h"
diff --git a/src/ua_types.c b/src/ua_types.c
index c4b5a2cde..42b17f3e5 100644
--- a/src/ua_types.c
+++ b/src/ua_types.c
@@ -13,6 +13,7 @@
  *    Copyright 2015-2016 (c) Oleksiy Vasylyev
  *    Copyright 2017 (c) Stefan Profanter, fortiss GmbH
  *    Copyright 2016 (c) Lorenz Haas
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/types.h>
diff --git a/src/ua_types_definition.c b/src/ua_types_definition.c
index 4e6275939..7e25300a9 100644
--- a/src/ua_types_definition.c
+++ b/src/ua_types_definition.c
@@ -4,6 +4,7 @@
  *
  *    Copyright 2025 (c) Fraunhofer IOSB (Author: Andreas Ebner)
  *    Copyright 2025 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/types.h>
diff --git a/src/ua_types_encoding_binary.c b/src/ua_types_encoding_binary.c
index e3d4f12b0..aaf07845d 100644
--- a/src/ua_types_encoding_binary.c
+++ b/src/ua_types_encoding_binary.c
@@ -15,6 +15,7 @@
  *    Copyright 2016 (c) Lorenz Haas
  *    Copyright 2017 (c) Mark Giraud, Fraunhofer IOSB
  *    Copyright 2017 (c) Henrik Norrman
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/types.h>
diff --git a/src/ua_types_encoding_json.h b/src/ua_types_encoding_json.h
index 21e512d30..b48f92929 100644
--- a/src/ua_types_encoding_json.h
+++ b/src/ua_types_encoding_json.h
@@ -4,6 +4,7 @@
  *
  *    Copyright 2014-2017 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
  *    Copyright 2018 (c) Fraunhofer IOSB (Author: Lukas Meling)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #ifndef UA_TYPES_ENCODING_JSON_H_
diff --git a/src/ua_types_encoding_xml.c b/src/ua_types_encoding_xml.c
index ab7076775..c691a9dc3 100644
--- a/src/ua_types_encoding_xml.c
+++ b/src/ua_types_encoding_xml.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/config.h>
 #include <open62541/types.h>
diff --git a/src/util/ua_util.c b/src/util/ua_util.c
index 874999c61..b12f494cb 100644
--- a/src/util/ua_util.c
+++ b/src/util/ua_util.c
@@ -5,6 +5,7 @@
  *    Copyright 2014, 2017 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
  *    Copyright 2014 (c) Florian Palm
  *    Copyright 2017 (c) Stefan Profanter, fortiss GmbH
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 /* If UA_ENABLE_INLINABLE_EXPORT is enabled, then this file is the compilation
diff --git a/tests/check_eventloop_http.c b/tests/check_eventloop_http.c
index 4fcc541de..2fd8cece5 100644
--- a/tests/check_eventloop_http.c
+++ b/tests/check_eventloop_http.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/plugin/eventloop.h>
 #include <open62541/plugin/log_stdout.h>
diff --git a/tests/check_eventloop_mqtt_lws.c b/tests/check_eventloop_mqtt_lws.c
index bd59381ea..16ece3fee 100644
--- a/tests/check_eventloop_mqtt_lws.c
+++ b/tests/check_eventloop_mqtt_lws.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/plugin/eventloop.h>
 #include <open62541/plugin/log_stdout.h>
diff --git a/tests/check_http_compression.c b/tests/check_http_compression.c
index 88bc59599..43c531847 100644
--- a/tests/check_http_compression.c
+++ b/tests/check_http_compression.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "eventloop_posix_http_compression.h"
 
diff --git a/tests/check_securechannel.c b/tests/check_securechannel.c
index d09292426..c3d1fb48f 100644
--- a/tests/check_securechannel.c
+++ b/tests/check_securechannel.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/transport_generated.h>
 #include <open62541/types_generated.h>
diff --git a/tests/check_securechannel_unit.c b/tests/check_securechannel_unit.c
index 8543a8ba9..1943a0558 100644
--- a/tests/check_securechannel_unit.c
+++ b/tests/check_securechannel_unit.c
@@ -2,7 +2,9 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
- *    Copyright 2026 (c) open62541 contributors */
+ *    Copyright 2026 (c) open62541 contributors
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/transport_generated.h>
 #include <open62541/types.h>
diff --git a/tests/check_types_builtin_json.c b/tests/check_types_builtin_json.c
index 76bc37506..df14eee37 100644
--- a/tests/check_types_builtin_json.c
+++ b/tests/check_types_builtin_json.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/types.h>
 #include <open62541/types_generated.h>
diff --git a/tests/check_types_json_decode.c b/tests/check_types_json_decode.c
index 0570f3bc5..15b501f21 100644
--- a/tests/check_types_json_decode.c
+++ b/tests/check_types_json_decode.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 /* JSON decoding tests */
 
diff --git a/tests/check_types_json_encode.c b/tests/check_types_json_encode.c
index 5cb465f27..5c18b6491 100644
--- a/tests/check_types_json_encode.c
+++ b/tests/check_types_json_encode.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 /* JSON encoding tests */
 
diff --git a/tests/check_utils_url_kvm.c b/tests/check_utils_url_kvm.c
index 358c3c202..12aa26036 100644
--- a/tests/check_utils_url_kvm.c
+++ b/tests/check_utils_url_kvm.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/types.h>
 #include <open62541/types_generated.h>
diff --git a/tests/client/check_client.c b/tests/client/check_client.c
index 63614a110..7817078d0 100644
--- a/tests/client/check_client.c
+++ b/tests/client/check_client.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/client_config_default.h>
 #include <open62541/server_config_default.h>
diff --git a/tests/client/check_client_async.c b/tests/client/check_client_async.c
index 1ae0b2a74..b2a5bc90a 100644
--- a/tests/client/check_client_async.c
+++ b/tests/client/check_client_async.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/client.h>
 #include <open62541/client_config_default.h>
diff --git a/tests/client/check_client_config_coverage.c b/tests/client/check_client_config_coverage.c
index b0a66a417..943d7754a 100644
--- a/tests/client/check_client_config_coverage.c
+++ b/tests/client/check_client_config_coverage.c
@@ -15,6 +15,7 @@
  * implementation shallow-copies logging/eventLoop and requires the
  * caller to not free both source and destination. The integration
  * tests already cover copy indirectly through UA_Client_newWithConfig.
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/client.h>
diff --git a/tests/client/check_client_discovery.c b/tests/client/check_client_discovery.c
index 8b0aa9fb0..04e98bce4 100644
--- a/tests/client/check_client_discovery.c
+++ b/tests/client/check_client_discovery.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/client_config_default.h>
 #include <open62541/server_config_default.h>
diff --git a/tests/client/check_client_http.c b/tests/client/check_client_http.c
index f195dd6a9..7fd8681cc 100644
--- a/tests/client/check_client_http.c
+++ b/tests/client/check_client_http.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "ua_types_encoding_binary.h"
 #include "ua_server_internal.h"
diff --git a/tests/client/check_client_http_protocol.c b/tests/client/check_client_http_protocol.c
index 4d015e5d9..95bd7fdd6 100644
--- a/tests/client/check_client_http_protocol.c
+++ b/tests/client/check_client_http_protocol.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <check.h>
 #include <stdlib.h>
diff --git a/tests/client/check_client_json_config.c b/tests/client/check_client_json_config.c
index be2b50700..4132408c5 100644
--- a/tests/client/check_client_json_config.c
+++ b/tests/client/check_client_json_config.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/client.h>
 #include <open62541/client_config_default.h>
diff --git a/tests/fuzz/fuzz_process_request.cc b/tests/fuzz/fuzz_process_request.cc
index e25eafcc8..328cbe64c 100644
--- a/tests/fuzz/fuzz_process_request.cc
+++ b/tests/fuzz/fuzz_process_request.cc
@@ -1,6 +1,7 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 /*
diff --git a/tests/interop/common/interop_common.h b/tests/interop/common/interop_common.h
index 6cac56609..11bbb38f4 100644
--- a/tests/interop/common/interop_common.h
+++ b/tests/interop/common/interop_common.h
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #ifndef OPEN62541_TESTS_INTEROP_COMMON_H_
 #define OPEN62541_TESTS_INTEROP_COMMON_H_
diff --git a/tests/interop/common/interop_server_common.c b/tests/interop/common/interop_server_common.c
index 8cfe47034..ff38f9f88 100644
--- a/tests/interop/common/interop_server_common.c
+++ b/tests/interop/common/interop_server_common.c
@@ -12,6 +12,7 @@
  *   Set env INTEROP_ECC_CERT_DIR to a directory containing ECC certificates
  *   named  server_c_<curve>.cert.der / server_c_<curve>.key.der  to expose
  *   ECC security policies.
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/server.h>
diff --git a/tests/interop/dotnet/CompactJsonInteropTest.cs b/tests/interop/dotnet/CompactJsonInteropTest.cs
index 3672db9dc..c0946ae9b 100644
--- a/tests/interop/dotnet/CompactJsonInteropTest.cs
+++ b/tests/interop/dotnet/CompactJsonInteropTest.cs
@@ -1,5 +1,7 @@
 /* ========================================================================
  * Compact JSON ExtensionObject interoperability with open62541.
+ *
+ * Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  * ======================================================================*/
 
 using NUnit.Framework;
diff --git a/tests/interop/dotnet/HttpsInteropClientTest.cs b/tests/interop/dotnet/HttpsInteropClientTest.cs
index 8bb0c9a6b..899a8376b 100644
--- a/tests/interop/dotnet/HttpsInteropClientTest.cs
+++ b/tests/interop/dotnet/HttpsInteropClientTest.cs
@@ -1,5 +1,7 @@
 /* ========================================================================
  * OPC UA .NET HTTPS client interoperability tests against open62541.
+ *
+ * Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  * ======================================================================*/
 
 using System.Collections.Concurrent;
diff --git a/tests/interop/http/check_interop_client_https.c b/tests/interop/http/check_interop_client_https.c
index 5dc6deb33..030516be7 100644
--- a/tests/interop/http/check_interop_client_https.c
+++ b/tests/interop/http/check_interop_client_https.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 /* OPC UA HTTPS interoperability client.
  *
diff --git a/tests/interop/http/interop_server_https.c b/tests/interop/http/interop_server_https.c
index 3e10cd1e0..acbc57b8d 100644
--- a/tests/interop/http/interop_server_https.c
+++ b/tests/interop/http/interop_server_https.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "../common/interop_common.h"
 
diff --git a/tests/interop/interop_server.c b/tests/interop/interop_server.c
index 6f60c7051..c4125b622 100644
--- a/tests/interop/interop_server.c
+++ b/tests/interop/interop_server.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "common/interop_common.h"
 
diff --git a/tests/interop/json/check_interop_json.c b/tests/interop/json/check_interop_json.c
index 7daf0427a..e240067b9 100644
--- a/tests/interop/json/check_interop_json.c
+++ b/tests/interop/json/check_interop_json.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/types.h>
 #include <open62541/types_generated.h>
diff --git a/tests/interop/websocket/interop_server_wss.c b/tests/interop/websocket/interop_server_wss.c
index 3fdcbd981..b9a879cca 100644
--- a/tests/interop/websocket/interop_server_wss.c
+++ b/tests/interop/websocket/interop_server_wss.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "../common/interop_common.h"
 
diff --git a/tests/pubsub/check_pubsub_encoding_json.c b/tests/pubsub/check_pubsub_encoding_json.c
index e5505f6e4..84fe1001a 100644
--- a/tests/pubsub/check_pubsub_encoding_json.c
+++ b/tests/pubsub/check_pubsub_encoding_json.c
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  * Copyright (c) 2018 Fraunhofer IOSB (Author: Lukas Meling)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/client.h>
diff --git a/tests/server/check_server_config_json.c b/tests/server/check_server_config_json.c
index d15ef7a33..c89dc66c6 100644
--- a/tests/server/check_server_config_json.c
+++ b/tests/server/check_server_config_json.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/server.h>
 
diff --git a/tests/server/check_server_http.c b/tests/server/check_server_http.c
index 13ba34d7d..4ebd3bbd4 100644
--- a/tests/server/check_server_http.c
+++ b/tests/server/check_server_http.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include "ua_types_encoding_binary.h"
 #include "ua_server_internal.h"
diff --git a/tests/server/check_server_http_protocol.c b/tests/server/check_server_http_protocol.c
index 45a35b61c..d6d65c645 100644
--- a/tests/server/check_server_http_protocol.c
+++ b/tests/server/check_server_http_protocol.c
@@ -1,6 +1,9 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+ */
 
 #include <open62541/server_config_default.h>
 #include <open62541/plugin/log_stdout.h>
diff --git a/tools/ci/cross-sdk/interop_test.sh b/tools/ci/cross-sdk/interop_test.sh
index e2cacefbc..699a19850 100755
--- a/tools/ci/cross-sdk/interop_test.sh
+++ b/tools/ci/cross-sdk/interop_test.sh
@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+# Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
+
 # Cross-SDK interoperability test orchestration script.
 #
 # Every scenario involves the C (open62541) SDK as server or client.
diff --git a/tools/ci/linux/ci.sh b/tools/ci/linux/ci.sh
index 18d4d47fc..559054b06 100644
--- a/tools/ci/linux/ci.sh
+++ b/tools/ci/linux/ci.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+# Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
 
 # Exit immediately if a command exits with a non-zero status
 set -e
diff --git a/tools/generate_datatypes.py b/tools/generate_datatypes.py
index 0fa0b7603..d44747145 100755
--- a/tools/generate_datatypes.py
+++ b/tools/generate_datatypes.py
@@ -3,6 +3,8 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
 
 import re
 import copy
diff --git a/tools/lws/opcHttpClient.py b/tools/lws/opcHttpClient.py
index 30fc9be2d..aa2e21f0d 100644
--- a/tools/lws/opcHttpClient.py
+++ b/tools/lws/opcHttpClient.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+# Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
 
 import argparse
 import gzip
diff --git a/tools/ua2json/ua2json.c b/tools/ua2json/ua2json.c
index 00e25729f..f3dcf04b0 100644
--- a/tools/ua2json/ua2json.c
+++ b/tools/ua2json/ua2json.c
@@ -3,6 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  *
  *    Copyright 2018 (c) Fraunhofer IOSB (Author: Julius Pfrommer)
+ *    Copyright 2026 (c) o6 Automation GmbH (Author: Julius Pfrommer)
  */
 
 #include <open62541/types.h>