Account

Sign in to access your account and subscription

U.S. Supreme Court Narrows Assignor Estoppel Doctrine In Continuation Patent Case

Nearly a century after endorsing the doctrine of assignor estoppel, the Court concluded that it applies "when, but only when, the assignor's claim of invalidity contradicts explicit or implicit representations he made in assigning the patent."

5 minute read August 01, 2021 at 12:09 AM
By
John Bowler and Kristie Butler
U.S. Supreme Court Narrows Assignor Estoppel Doctrine In Continuation Patent Case

On June 29, the U.S. Supreme Court issued a 5-4 decision in Minerva Surgical, Inc. v. Hologic, Inc., No. 20-440 (June 29, 2021) (slip opinion). Minerva

This premium content is locked for The Intellectual Property Strategist subscribers only

ENJOY UNLIMITED ACCESS TO THE SINGLE SOURCE OF OBJECTIVE LEGAL ANALYSIS, PRACTICAL INSIGHTS, AND NEWS IN The Intellectual Property Strategist

  • Stay current on the latest information, rulings, regulations, and trends
  • Includes practical, must-have information on copyrights, royalties, AI, and more
  • Tap into expert guidance from top entertainment lawyers and experts

Already have an account? Sign In Now

For enterprise-wide or corporate access, please contact Customer Service at [email protected] or call 1-877-256-2473.

NOT FOR REPRINT

© 2026 ALM Global, LLC, All Rights Reserved. Request academic re-use from www.copyright.com. All other uses, submit a request to [email protected]. For more information visit Asset & Logo Licensing.

Continue Reading

Most firms are aiming their newest tools at the work they already do — pouring their most powerful technology into running the same tasks a little faster. But when everyone automates the same tasks at once, no one pulls ahead. That reaches the future a little faster while leaving a firm’s largest opportunity untouched — and that opportunity isn’t doing more of the existing work, but transforming how the high-value work gets done.

June 01, 2026

Artificial intelligence is rapidly embedding itself into legal workflows, but much of the conversation treats all use cases as if they carry the same level of risk, even if they do not. The more useful question is not whether AI works, but where it can be safely applied and where it cannot.

June 01, 2026