Patent Armory Inc. has sued AMD (6:23-cv-00650) over the provision of its TrueAudio Next (TAN) solution. The plaintiff asserts a single patent generally related to “processing concurrent signals” in the new Western District of Texas complaint, filed on the day that Patent Armory’s case against Microsoft over the same patent was dismissed with prejudice. The only other defendant in Patent Armory’s rapidly expanding litigation to be accused of infringing this signal processing patent is NVIDIA. However, in the larger wing of this litigation, concerning customer service systems as well as speaker systems, Patent Armory added an Eastern District of Texas suit against American Airlines (2:23-cv-00407).