US 11828425

US Patent 11828425, titled "Organic-light emitting diode," was issued on November 28, 2023, from an application filed on January 18, 2023. The patent is currently assigned to Pictiva Displays International Ltd. The inventors are Ulrich Kastner-Jung, Markus Klein, Stan Maes, Romana Sigl, Annette Haid, Stephan Lintner, Julian Herget, and Gregor Matjan.

Abstract:
The patent describes an organic light-emitting diode (OLED) comprising an organic layer sequence with at least one radiation-emitting region that generates electromagnetic radiation from infrared to UV wavelengths during operation. It also includes a radiation exit area designed to emit this radiation with a directional emission profile, and an encapsulation that seals the organic layer sequence against environmental influences.

Plain-Language Overview of Independent Claims:

• Independent Claim 1: This claim describes an organic light-emitting diode (OLED) that includes an organic layer sequence with a light-emitting part. This part can produce light ranging from infrared to UV. The OLED also has a surface from which this light exits, and this surface is specially shaped so that the light is emitted in a specific direction (not spread out evenly). Finally, the OLED has a protective covering that seals the light-emitting components from external elements like moisture.
• Independent Claim 17: This claim also describes an organic light-emitting diode (OLED) with an organic layer sequence that has a light-emitting part, capable of generating electromagnetic radiation from infrared to UV during operation. It includes a light exit area and a protective encapsulation. The key feature of this claim is that the entire organic light-emitting diode is designed to be transparent.

Litigation Status:
US Patent 11828425 is currently involved in litigation. A Patent Trial and Appeal Board (PTAB) case, IPR2024-01095, was filed by Samsung Display Co., Ltd., which resulted in a Final Written Decision on January 22, 2026 (corrected February 9, 2026). The PTAB found several claims of the '425 patent, specifically claims 2, 4, 9–12, and 17, to be unpatentable as obvious.

However, Pictiva Displays International Ltd. sought a Director Review of this decision. On June 25, 2026, USPTO Director John Squires granted the Director Review and partially vacated the PTAB's Final Written Decision. The case has been remanded back to the PTAB for reconsideration of claim 2. This remand was necessary because the Board failed to explain why its conclusion regarding claim 2 in the IPR proceeding differed from a jury verdict in a parallel district court case.

In the parallel district court proceeding, Pictiva Displays International, Ltd. v. Samsung Electronics Co., filed in the Eastern District of Texas (Case No. 2:24-cv-00532, and also noted as 2:23-cv-00495), a jury found on November 3, 2025, that claim 2 of the '425 patent was infringed and not invalid. This indicates an ongoing and complex legal challenge for the patent.