“Without Prejudice” Dismissal of Earlier Complaint Does not Restart 315(b) Clock

As I predicted it would back in May, the Federal Circuit has now reversed the long-standing practice of the Patent Trial & Appeal Board (PTAB) to accept certain IPR petitions outside of the 1-year window of 35 U.S.C. § 315(b).  While 315(b) precludes petitions filed more than one year after service of a complaint of infringement for a subject patent, the Board had consistently held that where a first-filed complaint (outside the window) was dismissed without prejudice, that the one-year window would essentially reset.  In other words the PTAB adopted the legal principal that a voluntary dismissal of a complaint renders the earlier proceeding a nullity and leave the parties as if the action had never been brought.

In its en banc ruling today in Click-to-Call v. Ingenio (here), the Court reversed the Board’s longstanding practice.
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