Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

As many readers know, the Supreme Court just granted a petition for certiorari in Minerva Surgical, Inc. v. Hologic, Inc. The case asks the Supreme Court to abolish the doctrine of assignor estoppel.

Tenant estoppel certificates verify lease details for third parties during property transactions. Landlords require estoppel certificates to ensure accurate lease terms for sales or refinancing.

The Supreme Court on Tuesday issued its opinion in Minerva Surgical Inc. v. Hologic Inc. The case sought to abolish the doctrine of patent assignor estoppel, which prohibits an inventor from ...

This blog has previously discussed the effect of several different types of estoppel. See, e.g., Estoppel Estopped for Remanded Claims, Reminder: Estoppel May Not Preclude Prior-Art Systems, and PGR ...

Based upon recent case pronouncements by both New York's highest court and federal courts, the doctrine of promissory estoppel should be invoked with selectivity, particularly when used to undermine ...

In a five to four ruling, the US Supreme Court upheld the doctrine of assignor estoppel but said it could only be used in certain instances The US Supreme Court upheld the doctrine of assignor ...

We collaborate with the world's leading lawyers to deliver news tailored for you. Sign Up for any (or all) of our 25+ Newsletters. Some states have laws and ethical rules regarding solicitation and ...

When is a judgment or order a final judgment on the merits? In his Law and the Family column, Joel Brandes discusses issues related to the doctrine of res judicata which are frequently involved in ...

The Patent Trial and Appeal Board’s October 2013 decision determining that the doctrine of assignor estoppel is not an exception to Section 311(a) is the ninth to be deemed precedential The PTAB has ...

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 Supreme Court on Tuesday narrowed the doctrine of patent assignor estoppel, which prohibits an inventor from assigning a patent to someone and then later contending in litigation that the patent ...