Samsung Display seeks reexamination of 3 more NeoLayer patents

Samsung Display filed ex parte reexamination (EPR) requests with the U.S. Patent and Trademark Office (USPTO) in September and October against three NeoLayer patents, the company confirmed. The requests target U.S. Patent Nos. 8,330,358 (aperture ratio), 8,674,365 (TFT) and 11,088,129 (circuit structure), according to ZDNet Korea.

With the two NeoLayer patents Samsung Display challenged in August 2026 (8,093,592 on TFT and 8,698,712 on OLED pixel structure), the display maker has now requested reexamination of five NeoLayer patents in total.

Those five patents cover five of the six patents NeoLayer used in its first patent infringement suit against Samsung Electronics, filed in December 2025. Samsung Display has not yet requested reexamination or inter partes review of the three patents NeoLayer used in its second suit against Samsung Electronics, filed in June 2026.

NeoLayer acquired 101 patents from Taiwan's AUO in July 2025, including all the patents it has used in its suits. Its litigation has also targeted ASUS products — including the Galaxy S24 series, ROG Phone 9 and Q423S laptop — and BOE products, including the iPhone 16e, Pixel 9 Pro, MacBook Air and Hisense 32A45K TV.

The filing comes as the initiation rate of PTAB inter partes and post-grant reviews has fallen sharply since last year, leading to more use of USPTO ex parte reexamination, according to ZDNet Korea.