On February 12, the U.S. Patent and Trademark Office entered a notice of intent to issue an ex parte reexamination certificate on a patent owned by Opticurrent, LLC, which will confirm all challenged patent claims without any amendments or changes to the specification and drawings. The USPTO’s notice brings an end to a patent battle in which Opticurrent argued that Power Integrations engaged in some unusual gamesmanship to challenge the validity of patent claims asserted against it in district court.

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