Five Petitions, Five Denials: The Federal Circuit’s Mandamus Wall Grows Higher

CAFC, IPR, Patent

by Dennis Crouch

Five more mandamus petitions challenging IPR institution denials. Five more denials. In a series of nonprecedential orders issued between February 24 and 27, 2026, the Federal Circuit rejected every theory that petitioners offered for why the USPTO's discretionary denial of inter partes review should be subject to judicial oversight. The petitioners included major technology companies (Intel, Tesla), a Chinese communications firm (Kangxi Communication Technologies), an education technology company (Kahoot!), and a startup founded by the very inventors of the patents it sought to challenge (Tessell). Each presented a different factual scenario and a different legal theory. None succeeded. In re Kangxi Communication Technologies (Shanghai) Co., Ltd., No. 2026-115 (Fed. Cir. Feb. 24, 2026); In re Intel Corp., No. 2026-113 (Fed. Cir. Feb. 24, 2026); In re Tessell, Inc., No. 2026-117 (Fed. Cir. Feb. 24, 2026); In re Kahoot! AS, No. 2026-119 (Fed. Cir. Feb. 25, 2026); In re Tesla, Inc., No. 2026-116 (Fed. Cir. Feb. 27, 2026).

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Not So Sure: Federal Circuit Vacates Summary Judgment of Inequitable Conduct Despite Inventor’s ‘Smoking Gun’ Statement

CAFC, Patent

by Dennis Crouch

During patent prosecution, an inventor wrote to his attorney in the margin of a draft declaration: "I am not sure it is a good idea to disclose this document." The district court called this "a rare example of direct evidence of an intent to defraud." A magistrate judge agreed. The patent was declared unenforceable for inequitable conduct on summary judgment. Case closed. Or so it seemed.

In Global Tubing LLC v. Tenaris Coiled Tubes LLC, No. 23-1882 (Fed. Cir. Feb. 26, 2026), the Federal Circuit vacated the district court's summary judgment of inequitable conduct and also vacated summary judgment on a related Walker Process antitrust claim, finding genuine disputes of material fact on both.

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