On October 31, 2025, Hisense Group formally filed a patent infringement lawsuit against Nokia Corporation in the U.S. District Court for the Eastern District of Texas, alleging that four of Nokia's core products infringe upon seven of its U.S. patents. The products accused of infringement include Nokia's Industrial Edge Platform (MXIE), Industrial Device Management (IDM), DAC Manager, and Team Communications application. The involved patents cover key technological areas such as device control, data monitoring, and interface interaction.

Hisense's proactive patent infringement lawsuit against Nokia is not an isolated incident. Prior to this, Nokia had already initiated multiple rounds of patent litigation in 2025 against several companies, including Hisense, Acer, and Asus. These lawsuits span judicial and administrative bodies across multiple countries and regions, including the United States, India, and Europe.

In early April 2025, Nokia filed lawsuits against Hisense, Acer, and Asus in German courts and the Unified Patent Court of Europe, alleging infringement of video coding patent EP2661892.

Subsequently, on April 7, Nokia filed lawsuits against Hisense and others in U.S. district courts in Georgia, Texas, and California, involving five U.S. patents. On April 11, Nokia further filed a Section 337 investigation petition with the U.S. International Trade Commission.

By June, the legal battle had spread to Asia. Nokia sued Hisense and Acer in the Delhi High Court on June 12, followed by adding Asus to the lawsuit on June 26.

Facing Nokia's successive patent lawsuits, Hisense countered with patent invalidation challenges and requests for royalty rate rulings. Subsequently, Hisense initiated its own patent infringement lawsuits against Nokia, taking the following actions:

In June 2025, Hisense filed a lawsuit in the UK High Court seeking a global FRAND royalty rate ruling and provisional license.

Subsequently, Hisense initiated invalidation challenges against two of Nokia's video codec patents in China before the China National Intellectual Property Administration (CNIPA). (ZL200780053133.3 and ZL200780044601.0)

In October 2025, Hisense filed a request for invalidation of Nokia's US Patent No. 9036701 with the United States Patent and Trademark Office (USPTO). As of now, the USPTO has not initiated formal proceedings on this request.

On October 31, 2025, Hisense Group formally filed a patent infringement lawsuit against Nokia in the U.S. District Court for the Eastern District of Texas, alleging that four of Nokia's core products infringe upon seven of its U.S. patents.

As of now, the relevant litigation proceedings are progressing normally.