Plaintiff

Samsung Electronics Co., Ltd.

32 cases as plaintiff.

Cases
32
Active
10
22 closed
Filed
2016–2026
Top venue
PTAB
9 cases
Also appears as a defendant in 70 cases → View as defendant

Company profile

Samsung Electronics Co., Ltd. is a South Korean multinational electronics corporation headquartered in Suwon, South Korea. Founded in 1969, it is the flagship subsidiary of the Samsung Group. Samsung Electronics is a publicly traded company under the ticker KRX: 005930. The company is a major global enterprise, with an estimated 266,673 employees. For the fiscal year 2024, the company reported revenues of approximately $220.7 billion.

As one of the world's largest technology companies, Samsung Electronics operates two main divisions: Device eXperience (DX) and Device Solutions (DS). The DX division produces a wide array of consumer electronics, including its well-known Galaxy smartphones, tablets, and wearable devices, as well as TVs, projectors, sound devices, and digital home appliances like refrigerators and washing machines. The DS division manufactures electronic components, and is a global leader in semiconductors, producing memory (DRAM and NAND flash), system LSI, and providing foundry services for other companies.

Samsung’s patent litigation profile is primarily that of a large operating company defending itself against infringement allegations. The provided data shows Samsung as a defendant in 11 of 13 tracked cases, a typical posture for a company with a vast product portfolio. Many of these suits are filed in plaintiff-friendly jurisdictions, particularly the U.S. District Court for the Eastern District of Texas. In two instances, Samsung has acted as a plaintiff at the Patent Trial and Appeal Board (PTAB), a common strategy for defendants to challenge the validity of asserted patents.

The case list shows Samsung is frequently targeted by non-practicing entities (NPEs). Several entities appear as repeat plaintiffs against the company, including VB Assets, LLC, Gaea, LLC, and Lepton Computing LLC, all of which have filed suits in the Eastern District of Texas. The two plaintiff-side cases initiated by Samsung are PTAB petitions challenging the validity of patents held by VB Assets, LLC and Topwire LLC, corresponding to defensive actions against lawsuits brought by these entities.

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Filing activity

2016: 1 case'16'17'18'19'202021: 1 case'212022: 4 cases'222023: 2 cases'232024: 6 cases'242025: 8 cases8'252026: 1 case'26
Cases filed per year with Samsung Electronics Co., Ltd. as plaintiff.

Samsung Electronics Co., Ltd. et al. v. Xifi Networks R&D Inc.

Instituted - Pending
Docket:
IPR2025-01208
Filed:
2025-07-03
Patents:11974143

This Inter Partes Review (IPR) case was initiated by Samsung Electronics Co., Ltd. and Samsung Electronics America, Inc. against Xifi Networks R&D Inc. before the PTAB, challenging US patent 11974143. The IPR has been instituted and is currently pending.

Samsung Electronics Co., Ltd. v. Wilus Institute of Standards and Technology Inc.

Pending - Instituted
Docket:
IPR2025-01110
Filed:
2025-06-24
Patents:11716171

Samsung Electronics Co., Ltd. filed a petition for inter partes review (IPR) against Wilus Institute of Standards and Technology Inc., challenging US patent 11716171B2. The petition was filed on June 24, 2025, and the case is currently instituted, with a Final Written Decision due on January 12, 2027.

Samsung Electronics Co., Ltd. et al. v. Harbor Island Dynamic, LLC

final written decision; appealed
Docket:
IPR2024-01402
Filed:
2024-09-24
Patents:7745886

Samsung petitioned for inter partes review of all claims 1-19 of the '886 patent. The PTAB issued a final written decision on March 16, 2026, holding the claims unpatentable over prior art including Okashita, Burgener, and Yu. Harbor Island appealed to the Federal Circuit.

Samsung Electronics Co., Ltd. et al. v. Harbor Island Dynamic, LLC

Final written decision issued; Director Review pending
Docket:
IPR2024-01404
Filed:
2024-09-24
Patents:9147609

Samsung petitioned for inter partes review challenging the '609 patent. The PTAB instituted trial, held oral argument, and, according to the patent owner's parent company's SEC filings, issued final written decisions canceling claims of the '609 patent. Harbor Island's Director Review request was pending as of the filing.

Samsung Electronics Co., Ltd. et al. v. Harbor Island Dynamic, LLC

Final written decision; appealed
Docket:
IPR2024-01403
Filed:
2024-09-20
Terminated:
2026-02-09
Patents:7772673

Samsung petitioned for inter partes review of the '673 patent. The PTAB instituted on all three grounds and issued a Final Written Decision on February 9, 2026, finding all challenged claims unpatentable. Harbor Island appealed the decision.

Samsung Electronics Co., Ltd. et al. v. Harbor Island Dynamic, LLC

Pending Director Review
Docket:
IPR2024-01405
Filed:
2024-09-20
Patents:9245826

Samsung petitioned for inter partes review of all claims 1-20 of the 9245826 patent. The Board issued a Final Written Decision finding all challenged claims unpatentable, and Harbor Island Dynamic filed a request for Director Review.

Samsung Electronics Co., Ltd. et al. v. CM HK, Ltd. et al.

Active
Docket:
4:24-cv-06567
Filed:
2024-09-18
Patents:10852846

In this action, Samsung seeks a declaratory judgment of non-infringement of the '846 patent. A motion to dismiss for lack of personal jurisdiction was granted, but the court is allowing Samsung to conduct jurisdictional discovery.

Samsung Electronics Co., Ltd. et al. v. Manufacturing Resources International, Inc.

Final written decision; outcome not confirmed
Docket:
IPR2023-00255
Filed:
2022-12-15
Patents:9629287

Samsung and others filed inter partes review of US Patent 9,629,287. The patent file wrapper records a final written decision, but the substantive outcome is not confirmed in the narrative.

Samsung Electronics Co., Ltd. et al. v. Manufacturing Resources International, Inc.

Final written decision; affirmed on appeal
Docket:
IPR2023-00254
Filed:
2022-12-13
Terminated:
2024-06-18
Patents:10506740

Samsung petitioned for inter partes review of the '740 patent. The PTAB issued a final written decision holding all challenged claims unpatentable as obvious, and the Federal Circuit later affirmed.

Samsung Electronics Co., Ltd. et al. v. Manufacturing Resources International, Inc.

Final Written Decision - Appealed
Docket:
IPR2023-00221
Filed:
2022-12-07
Terminated:
2024-06-18
Patents:11013142

Samsung petitioned for inter partes review of all claims 1-15 of the '142 patent. The Board held all challenged claims unpatentable as obvious, and the decision was appealed (noted as 2024-2231).

Apple Inc. et al. v. Smart Mobile Technologies LLC

Final Written Decision; IPR certificate issued
Docket:
IPR2022-00980
Filed:
2022-05-09
Terminated:
2024-01-05
Patents:8761739

Apple Inc., Samsung Electronics Co., Ltd., and Samsung Electronics America, Inc. filed an inter partes review petition against Smart Mobile Technologies LLC directed at U.S. Patent No. 8,761,739. The PTAB instituted review on December 5, 2022, issued a Final Written Decision, and an IPR certificate issued on January 5, 2024.

Samsung Electronics Co., Ltd. et al. v. Netlist, Inc. et al.

stayed
Docket:
1:21-cv-01453-RGA
Filed:
2021-10-15
Patents:10217523B1

Samsung initiated a declaratory judgment action against Netlist, alleging non-infringement of US10217523B1 and other patents. Netlist filed counterclaims for infringement against Samsung, Google LLC, and Alphabet, Inc. The case was stayed pending resolution of a related action.

Samsung Electronics Co., Ltd. et al. v. Raytheon Company

joined
Docket:
IPR2016-00962
Filed:
2016-04-28
Terminated:
2016-11-30
Patents:5591678

Samsung entities petitioned for inter partes review of the ’678 patent. The proceeding was joined with IPR2016-00209 and decided in the same November 30, 2016 final written decision holding claims 1–18 unpatentable.

Samsung Electronics Co., Ltd. et al. v. Chien-Min Sung

Final Written Decision status, with oral argument scheduled for June 19, 2025
Docket:
IPR2024-00533
Patents:8974270

Samsung entities filed an Inter Partes Review (IPR) against Chien-Min Sung, challenging US Patent 8974270. Oral arguments are scheduled for June 19, 2025.

Samsung Electronics Co., Ltd. et al. v. Manufacturing Resources International, Inc.

Final Written Decision; all challenged claims held unpatentable
Docket:
IPR2023-00199
Terminated:
2024-06-18
Patents:8854595

Samsung petitioned for IPR challenging claims 1, 4, 7, and 8 of the '595 patent. The PTAB instituted review and held all challenged claims unpatentable as obvious over prior art.