For the second patent (i.e., the patent for which the IPR petition was denied), the Federal Circuit reviewed the district court’s summary judgment order holding that assignor estoppel bars the ...

Q: I recently closed on my condo purchase. I signed a form called an estoppel certificate. The closer didn’t really explain well what it was. What is it that I signed? A: An estoppel certificate is a ...

If you are an investor buying a leased property, you are undoubtedly looking to the rental income as the return on your investment, in addition to the appreciation in the value of the property that is ...

April 17, 2023 - Patent Trial and Appeal Board (PTAB) post-grant validity challenges — for example, inter partes review — are frequent components of a patent litigation strategy for defendants.

March 20, 2025 - In February 2025, the U.S. Court of Appeals for the Federal Circuit clarified when collateral estoppel might apply in a district court case following an invalidity determination by ...

The doctrine of collateral estoppel can assist parties facing costly litigation. Robert Berezin and Carmen Bremer consider how it can be invoked in patent disputes Collateral estoppel can be used to ...

Thus, a party may be precluded from advancing an argument in litigation that is "logically incompatible" with tax forms that the party signed. See Matter of Chimsanthia, 200 A.D.3d 450 (1st Dept. 2021 ...