by Matthew Johnson | Mar 12, 2019 | Estoppel
By Mike Lavine and Matt Johnson Presidio Components, Inc. (“Presidio”) petitioned for inter partes review (IPR) of U.S. Patent No. 6,144,547 (the “‘547 Patent”), which American Technical Ceramics Corp. and AVX Corporation (together “plaintiffs”) asserted against...
by Emily Tait | Feb 20, 2019 | Estoppel
By Emily Tait – When an IPR petition results in a final written decision, the IPR petitioner (or the petitioner’s real party in interest or privy) is estopped from asserting in a civil litigation or an ITC action that “the claim is invalid on any ground that...
by Matthew Johnson | Dec 31, 2018 | Estoppel
By Marlee Hartenstein and Matt Johnson – Assignor estoppel is an equitable doctrine that prevents a party who assigns a patent to another from later challenging the validity of the assigned patent. As reported in a prior post, the Federal Circuit recently...
by Marc S. Blackman | Dec 21, 2018 | Estoppel
By Marc Blackman – The Federal Circuit recently affirmed final written decisions in two inter partes reviews by holding that the patent owner was collaterally estopped from relitigating the threshold issue of whether a prior art reference was a...
by Carl Kukkonen | Nov 26, 2018 | Estoppel, Petitions
By Jocelyn Yu Ph.D. and Carl Kukkonen Assignor estoppel is a long-established, common-law doctrine of equity, which prevents a party who assigns a patent to another from later challenging the validity of the assigned patent. The doctrine also applies to parties in...
by David Maiorana | Nov 19, 2018 | Estoppel
By: David Maiorana In In re Certain Magnetic Tape Cartridges and Components Thereof, 337-TA-1058 (ITC October 2, 2018, Order), Administrative Law Judge Cheney ruled that even if a respondent is estopped from raising certain invalidity challenges because it failed to...
