Patent 7439623

PTAB challenges

AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.

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Proceedings on file (2)

All PTAB activity →

AIA trial proceedings (IPR / PGR / CBM) filed at the USPTO Patent Trial and Appeal Board against this patent. Sourced from the USPTO Open Data Portal and refreshed every six hours; each proceeding number deep-links to the PTAB E2E docket.

2 discretionary denials
Discretionary Denial
Filed
Jul 25, 2025
Last modified
Feb 2, 2026
Petitioner
Taiwan Semiconductor Manufacturing Company Ltd.
Inventor
Takeshi Harada
Discretionary Denial
Filed
Jul 25, 2025
Last modified
Feb 2, 2026
Petitioner
Taiwan Semiconductor Manufacturing Company, Ltd.
Inventor
Takeshi Harada

PTAB challenges

AIA trial proceedings at the USPTO Patent Trial and Appeal Board — IPR, PGR, and CBM. Petitioners, judge panels, claim-level invalidation outcomes from Final Written Decisions, and Federal Circuit appeals. The single most important defensive datapoint after litigation history.

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