SEOUL SEMICONDUCTOR CO., LTD. et al v. Planar Systems, Inc.

Filed2026-07-30
CourtS.D. Tex.
Docket4:26-cv-06154
Nature of suit830 Patent
Practice areaPatent
PlaintiffSEOUL SEMICONDUCTOR CO., LTD. et al
DefendantPlanar Systems, Inc.
ComplaintDownload the complaint (PDF, free)

What the complaint alleges

Seoul Semiconductor Co., Ltd. and Seoul Viosys Co. Ltd. sued Planar Systems, Inc. in the U.S. District Court for the Southern District of Texas for patent infringement. The plaintiffs allege that Planar imports, sells, and offers for sale light-emitting diode (LED) display products that infringe twelve of their patents. The complaint claims Planar had knowledge of the patents and continued its infringing conduct after receiving notice.

Claims asserted