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KLA-Tencor Didn't Engage In Patent Fraud, Fed. Circ. Affirms

Law360 (May 23, 2019, 6:36 PM EDT) -- KLA-Tencor Corp. did not fraudulently obtain a semiconductor measurement system patent, the Federal Circuit affirmed Thursday, just one day after particularly no-nonsense oral arguments.

The panel issued a one-line order affirming the dismissal of Xitronix Corp.'s antitrust suit against KLA. The quick decision came after years of tossing the case back and forth between the Federal and Fifth circuits, and a hearing where one judge held little patience for both sides.

Xitronix accused KLA of violating the Sherman and Clayton Antitrust Acts by making fraudulent statements and omissions to the U.S. Patent and Trademark Office during its bid for a new patent...

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Attached Documents



Case Information

Case Title

Subscribers Only

Case Number

Subscribers Only


Appellate - Federal Circuit

Nature of Suit

410 Antitrust (Federal Question)

Date Filed

September 30, 2016

Law Firms


Government Agencies