Semiconductor devices — US PTAB Patent Cases
143 decisions indexed
Page 1 of 5 · 143 total
Taiwan Semiconductor Manufacturing Company Ltd. v.Marlin Semiconductor Ltd. et al.
TSMC filed an IPR petition challenging U.S. Patent 8,076,735, asserting that all six claims are anticipated or obvious over prior art references Chuang, Lin, and Brask. The petition seeks cancellation of the claims.
Taiwan Semiconductor Manufacturing Company Limited v.Marlin Semiconductor Ltd. et al.
TSMC has filed a petition to invalidate Marlin Semiconductor’s 9,318,609 FinFET patent, asserting that all ten claims are anticipated or obvious over earlier TSMC patents and related publications. The petition lists multiple grounds under §§102 and 103, relying on Xu, Ching, and Huang references.
GLOBALFOUNDRIES Inc. et al. v.OAK IP LLC
The Board instituted IPR2020‑01206 on 294 claims of the ’691 patent and held eight claims unpatentable for anticipation by Grupp ’483, while leaving the remaining claims intact.
GLOBALFOUNDRIES Inc. et al. v.OAK IP LLC
The PTAB found 11 of the 14 challenged claims of the ’395 patent unpatentable under 35 U.S.C. §102(b) due to anticipation by Grupp ’483, while claims 11, 12, and 14 survived. Written‑description and enablement challenges were rejected.
GLOBALFOUNDRIES Inc. et al. v.OAK IP LLC
The PTAB held that Samsung's claims 1‑5 and 8‑10 of the ’395 patent were anticipated by Goodnick, rendering them unpatentable, while the remaining challenged claims were left intact.
GLOBALFOUNDRIES Inc. et al. v.OAK IP LLC
The PTAB found all challenged claims of the ’261 patent unpatentable after concluding that prior art Grupp ’483 anticipates the claims and Jammy renders them obvious. Motions to exclude expert testimony were denied.
GLOBALFOUNDRIES Inc. et al. v.OAK IP LLC
GlobalFoundries has filed an IPR petition challenging all 28 claims of Oak IP's U.S. Patent No. 10,937,880, asserting lack of written description for the "oxide of titanium" genus and insufficient enablement of specific contact resistivity limits. The petition relies on Grupp’483 for anticipation and Jammy for obviousness.
Taiwan Semiconductor Manufacturing Company, Ltd. v.Advanced Integrated Circuit Process LLC
TSMC has filed an IPR petition challenging nine claims of the ’779 patent, asserting anticipation and obviousness over multiple prior‑art references including Torii, Mise, Yu, Gilmer and Chen. The petition also argues that the Board should not deny institution under §§314(a) and 325(d).
Micron Technology, Inc. et al. v.Palisade Technologies, LLP
Micron has filed an IPR petition seeking cancellation of 12 claims of Palisade’s ’962 voltage‑regulator patent, asserting obviousness over the Scott patent and over Scott combined with Gradinariu. The petition details extensive claim‑by‑claim comparisons to the prior art.
SAMSUNG ELECTRONICS CO., LTD., et al. v.Sinotechnix LLC
Samsung Electronics has filed an IPR petition seeking to invalidate claims 1‑4 and 6 of Sinotechnix’s 9,412,913 LED‑package patent, asserting obviousness and anticipation based on five prior‑art references.
Taiwan Semiconductor Manufacturing Company Ltd v.Marlin Semiconductor Limited et al.
TSMC has filed an IPR petition challenging all six claims of Marlin Semiconductor’s ’909 FinFET patent, asserting obviousness over Lin, Liaw, Chang, and Liu references. The petition argues that each claim element is disclosed in the prior art and that discretionary denial is unwarranted.
Taiwan Semiconductor Manufacturing Company Ltd. v.Marlin Semiconductor Limited et al.
TSMC has filed an IPR petition seeking cancellation of claims 1‑6 of Marlin Semiconductor’s ’510 FinFET patent, asserting obviousness over four prior‑art references. The petition presents three grounds, each invoking 35 U.S.C. § 103, targeting the entire claim set.
Taiwan Semiconductor Manufacturing Company Ltd. v.Marlin Semiconductor Ltd. et al.
TSMC has filed an IPR petition challenging all 11 claims of Marlin’s FinFET patent, asserting obviousness over six prior‑art references. The petition details five statutory grounds under 35 U.S.C. §103.
Excelliance Mos Corporation v.Force MOS Technology Co., Ltd.
The PTAB affirmed all nine claims of Force MOS Technology’s ’634 patent after finding Inergy Technology’s IPR unsubstantiated. The Board held that the petitioner failed to prove anticipation or obviousness over Hirler, Shiraishi, and Kobayashi references.
Excelliance Mos Corporation v.Force MOS Technology Co., Ltd.
Excelliance Mos Corp. seeks Director Review of a Board’s discretionary denial of institution for its IPR against Force MOS Technology’s trench‑MOSFET patent, arguing the denial ignored material prior art and violated statutory rights.
Excelliance Mos Corporation v.Force MOS Technology Co., Ltd.
Excelliance Mos Corporation has filed a petition to institute an IPR against Force MOS Technology’s 7,629,634 trench MOSFET patent, asserting that all nine claims are obvious over the Hshieh and Uno prior‑art references.
Taiwan Semiconductor Manufacturing Company Limited v.Marlin Semiconductor Ltd. et al.
TSMC has filed an IPR petition challenging all ten claims of Marlin’s 6,888,181 FinFET triple‑gate patent, asserting anticipation and obviousness over multiple prior‑art references. The petition seeks institution of the review and cancellation of the claims.
Taiwan Semiconductor Manufacturing Company Limited v.Marlin Semiconductor Ltd. et al.
TSMC has filed an IPR petition challenging all nine claims of Marlin Semiconductor’s FinFET fabrication patent, asserting that the claims are obvious over prior‑art patents Xu, Lin, and Brask under 35 U.S.C. §103.
United Microelectronics Corporation et al. v.Advanced Integrated Circuit Process LLC
United Microelectronics Corporation has filed an IPR petition challenging fourteen claims of the ’180 patent covering high‑k gate dielectric MOSFET structures. The challenger argues the claims are obvious over several pre‑2005 publications, invoking 35 U.S.C. §103.
United Microelectronics Corporation et al. v.Advanced Integrated Circuit Process LLC
United Microelectronics has filed an IPR petition challenging ten claims of the ’076 high‑k gate dielectric patent, asserting obviousness over a suite of prior‑art references. The petition seeks institution of the review under 35 U.S.C. §103.
Micron Technology, Inc. et al. v.Yangtze Memory Technologies Company, Ltd.
Micron Technology successfully instituted PGR against Yangtze Memory Technologies regarding a patent on 3D memory structures. The Board found that the petitioner sufficiently demonstrated obviousness over prior art references Kim and Lee for multiple claims. This moves the dispute into trial phase, raising significant stakes in semiconductor technology licensing.
United Microelectronics Corporation et al. v.Advanced Integrated Circuit Process LLC
United Microelectronics Corp. has filed a petition to invalidate five claims of Advanced Integrated Circuit Process’s ’779 patent, alleging anticipation by Torii and obviousness over Gilmer and Chen. The petition relies on pre‑AIA §§102 and 103 grounds.
Samsung Electronics Co., Ltd. et al. v.W&Wsens Devices Inc.
Samsung’s request for Director Review of the PTAB’s denial to institute an IPR against W&Wsens’s patent was rejected. The Board affirmed discretionary denial, citing Fintiv factors and settled expectations.
Samsung Electronics Co., Ltd. et al. v.W&Wsens Devices Inc.
Samsung Electronics filed an IPR petition seeking cancellation of 22 claims of W&Wsens Devices’ ’543 patent covering a single‑chip microstructure‑enhanced photodetector. The challenger relies on the Kuboi publication to argue anticipation and obviousness. The Board has yet to decide whether to institute the review.
Samsung Electronics Co., Ltd. et al. v.Wilus Institute of Standards and Technology Inc.
Samsung’s IPR against Wilus has been instituted after the Board granted institution on Feb. 9, 2026. The patent owner’s request for Director Review is argued to be moot, relying on pre‑institution filings and Samsung’s compliance with its Fintiv stipulation.
GLOBALFOUNDRIES Inc. et al. v.OAK IP LLC
In IPR2020‑01207, the PTAB held that Samsung’s challenger proved that 11 of the 14 asserted claims of the ’395 patent are anticipated by the prior‑art Grupp ’483 reference, rendering them unpatentable, while three claims remained patent‑eligible.
GLOBALFOUNDRIES Inc. et al. v.OAK IP LLC
The PTAB held that Samsung’s challenge to Acorn’s ’395 patent succeeded on eight of the 26 claims, finding claims 1‑5 and 8‑10 unpatentable, while the remaining claims survived.
GLOBALFOUNDRIES Inc. et al. v.OAK IP LLC
GlobalFoundries has filed a petition to invalidate 19 claims of Oak IP’s U.S. Patent No. 10,090,395, asserting that prior patents Grupp ’483 and Jammy anticipate or render obvious the challenged claims covering metal‑semiconductor interface layers.
uPI Semiconductor Inc. v.Force MOS Technology Co. Ltd.
The PTAB found claims 1 and 3–5 of Force MOS’s 7,812,409 patent unpatentable as obvious over Kobayashi and Hshieh, while claims 2 and 6 remained patentable.
uPI Semiconductor Inc. v.Force MOS Technology Co. Ltd.
uPI Semiconductor petitions the PTAB to institute an IPR against Force MOS Technology’s 2010 trench MOSFET patent, asserting that claims 1‑5 are obvious over Bulucea combined with four other references. The petition argues that PTAB discretion should not block institution.
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