Defendant

Samsung Display Co., Ltd.

9 cases as defendant.

Cases
9
Active
2
7 closed
Filed
2023–2026
Top venue
PTAB
2 cases
Also appears as a plaintiff in 7 cases → View as plaintiff

Company profile

Samsung Display Co., Ltd. is a South Korean manufacturer of electronic displays headquartered in Yongin, Gyeonggi Province. Spun off from Samsung Electronics on April 1, 2012, it operates as a subsidiary of Samsung Electronics, which holds an 84.8% stake in the company. Samsung Display is a major global supplier in the display market, reporting revenue of approximately $25.98 billion in 2022 and employing over 21,000 people as of early 2026.

The company is a leading producer of Organic Light-Emitting Diode (OLED) and Quantum Dot OLED (QD-OLED) panels. It ended its manufacturing of Liquid Crystal Display (LCD) panels in June 2022 to focus solely on OLED technologies. Samsung Display's products are used in a wide range of consumer and automotive applications, including smartphones, televisions, laptops, computer monitors, smartwatches, and virtual reality headsets. The company is known for mass-producing and commercializing foldable displays and is developing next-generation technologies like rollable and slidable panels.

Based on the provided data, Samsung Display is an operating company that actively engages in patent litigation. The single tracked case lists it as a defendant in a proceeding initiated by a direct competitor, BOE Technology Group Co., Ltd., before the U.S. Patent and Trademark Office's Patent Trial and Appeal Board.

This case was part of a broader, multi-year global patent dispute between the two display manufacturing giants. Starting in 2022, Samsung Display and BOE filed multiple patent infringement lawsuits and trade-secret misappropriation complaints against each other in U.S. federal courts and before the International Trade Commission (ITC). The disputes centered on key OLED technologies. In November 2025, the companies reached a global settlement, agreeing to terminate all pending litigation and withdraw their respective complaints. As part of the settlement, BOE reportedly agreed to license Samsung Display's OLED intellectual property and pay royalties.

Filing activity

2023: 2 cases2'232024: 1 case'242025: 2 cases'252026: 1 case'26
Cases filed per year naming Samsung Display Co., Ltd. as defendant.

Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. v. Samsung Display Co., Ltd. et al.

Open; early stage
Docket:
2:26-cv-00228
Filed:
2026-03-19

Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. asserts US 11,257,891, US 12,133,429, and US 11,957,031 against Samsung Display, Walmart, and Best Buy in the Eastern District of Texas. The complaint alleges infringement through Samsung Display OLED panels and downstream products including Google Pixel 8, Pixel 9, and Pixel 10 series, seeking declaratory judgment, permanent injunction, damages, enhanced willful damages, and attorney's fees. The case remains open at an early stage.

Unified Patents v. Samsung Display Co., Ltd.

Settled
Docket:
IPR2025-01478
Court:
PTAB
Filed:
2025-03-13
Patents:11574990

Unified Patents filed an Inter Partes Review (IPR) petition against Samsung Display Co., Ltd. regarding US patent 11574990, which is currently pending settlement and institution.

Mianyang BOE Optoelectronics et al. v. Samsung Display Co., Ltd.

final written decision
Docket:
IPR2024-00620
Filed:
2024-03-06
Patents:9330593

PTAB IPR by Mianyang BOE, Wuhan China Star, Tianma, and Visionox and their subsidiaries against Samsung Display's US 9,330,593. The Board issued a Final Written Decision reportedly holding some challenged claims valid and others invalid.

Mianyang BOE Optoelectronics Technology Co., Ltd. v. Samsung Display Co., Ltd.

Final Written Decision; on appeal
Docket:
IPR2023-00941
Filed:
2023-06-09
Terminated:
2024-12-06
Patents:7414599

Mianyang BOE and co-petitioners filed an inter partes review challenging all claims of US 7,414,599. The PTAB entered a Final Written Decision on Dec. 6, 2024 finding no challenged claim unpatentable; Samsung Display prevailed and the matter is on appeal.

Mianyang BOE Optoelectronics Technology Co., Ltd. et al. v. Samsung Display Co., Ltd.

Settlement
Docket:
IPR2025-01476
Patents:10541279

This PTAB case, IPR2025-01476, was filed by Mianyang BOE Optoelectronics Technology Co., Ltd. and other petitioners against patent owner Samsung Display Co., Ltd. The case status is listed as settlement.

Mianyang BOE Optoelectronics Technology Co., Ltd. et al. v. Samsung Display Co., Ltd.

on appeal
Docket:
IPR2023-01075
Terminated:
2025-01-06
Patents:11594578

Inter partes review filed by four Chinese panel makers against Samsung Display's US 11,594,578 (the ’578 patent). The PTAB issued a Final Written Decision on Jan. 6, 2025, holding no challenged claim unpatentable; the decision is on appeal to the Federal Circuit.

BOE Technology Group Co., Ltd. et al. v. Samsung Display Co., Ltd.

pending
Docket:
25-1519
Patents:11594578

Pending Federal Circuit appeal by BOE, CSOT, Tianma, and Visionox from PTAB decisions upholding Samsung Display patents, including the ’578 final written decision in IPR2023-01075. Companion IPR appeals are 25-1517, 25-1518, 25-1520, and 25-1521. No 2026 Federal Circuit opinion or Rule 36 judgment on the ’578 was found.