M&K, Gensquare LLC, and Tagivan II have filed a new HEVC lawsuit against Amazon in the Düsseldorf Regional Court, alleging that Amazon used their standard-essential patents in devices capable of playing 4K content, including its Fire TV.

Earlier this month, Microsoft joined the Via Licensing Alliance (Via LA) HEVC (H.265) patent pool, thereby concluding its dispute with licensors M&K, Gensquare LLC, and Tagivan II in the Düsseldorf Regional Court. These companies asserted seven HEVC standard essential patents (SEPs) against Microsoft between November 26, 2024, and March 6, 2025, alleging infringement in some of its most popular products, including Windows 10, Windows 11, Surface tablets, and Xbox consoles.

Currently, the primary patent pools managing HEVC standard essential patents are Access Advance and Via LA. Microsoft is both a licensor and licensee of the Access Advance HEVC patent pool, as well as a licensee of the Via LA HEVC patent pool. Amazon, however, is currently only a licensee of the Access Advance HEVC patent pool.