PGR Filings Tick Up, But Still Infrequent

PGR Filings Tick Up, But Still Infrequent

By John Marlott – PGR petition filings were up slightly over the prior USPTO fiscal year, but the long-term historical trend continues to show that PGR challenges remain relatively infrequent. We recently reported on the PTAB’s release of its final statistics...
PGRs Still Rare – Is Estoppel The Reason?

PGRs Still Rare – Is Estoppel The Reason?

By John Marlott – A Post-Grant Review can be used to challenge newly-issued patents on wide-ranging grounds, but PGRs remain relatively unpopular: statutory estoppel may be a reason why. The America Invents Act (“AIA”) created new procedures for challenging the...