A Blog About Intellectual Property Litigation and the District of Delaware


Entries for tag: ipr

Previous equations for deciding whether to join an existing IPR
Previous equations for deciding whether to join an existing IPR Roman Mager, Unsplash

Today the Federal Circuit held that a party joining an existing IPR is not subject to estoppel on any grounds other than those that were actually raised. See the opinion below.

Before this, a plaintiff could argue that a defendant who joined an in-progress IPR was estopped on any anticipation or obviousness arguments that "reasonably could have [been] raised" in the IPR.

The Court here held, in short, that because a defendant joining an existing IPR is not allowed to add new grounds at all, it cannot be estopped except on those grounds actually raised.

It relied on the Facebook decision we talked about …

While pre-institution stays pending IPR are usually seen as disfavored in this District, they are occasionally granted. The circumstances must be right, however.

Judge Connolly recently ordered a stay in Allergan USA, Inc. v. Prollenium US Inc., C.A. No. 20-0104-CFC pending IPRs that had been filed—but not instituted—on all asserted claims.

He noted that a related action had already been stayed pending IPR, and that the defendants had agreed "to forgo their inequitable conduct counterclaims and defenses in both actions," and found good cause to stay. As a condition of the stay, he required that defendants dismiss their inequitable conduct defenses and counterclaims, and ordered that they would be "barred" from pursuing those defenses in both actions...