Supreme Court: Want post-expiration royalties? Go to Congress

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Cookies Settings

Supreme Court: Want post-expiration royalties? Go to Congress

The US Supreme Court has upheld the ban on royalty payments for sales made after a patent’s expiration

Kimble v Marvel involves Stephen Kimble's invention (patent no 5,072,856) for a toy glove that allows the user to shoot foam string from the wrist. A Marvel predecessor licensed the patent for use in a Spiderman toy. The agreement had no limitation regarding the patent’s expiration. Marvel later sought a declaratory judgment ruling that it was not required to pay royalties for post-expiration sales due to the Supreme Court’s ruling in Brulotte v Thys, which bars such payments. Both the District Court and the Ninth Circuit found in favour of Marvel.

In a 6-3 decision, the Court affirmed, finding that its earlier holding expressly barred patentees from continuing to receive royalties for sales made after the patent has expired. The majority decision written by Justice Kagan held that stare decisis dictates that the Court follow the Brulotte ruling. The majority noted that while Kimble may have raised valid arguments attacking the economic underpinnings behind Brulotte, such arguments should be brought to Congress, not the court.

Similarly, the majority said that Kimble’s proposed alternative, applying the “rule of reason” analysis from antitrust law, would lead to less certainty and higher litigation costs in contrast to the bright-line Brulotte rule.

The majority also found that, despite complaints that the Brulotte prohibition restricts innovation and deal-making, there are multiple ways of drafting agreements that get around this restriction.

The dissent, written by Justice Alito and joined by Chief Justice Roberts and Justice Thomas, argued that though the majority hangs its decision on stare decisis, the underlying Brulotte decision was an example of judicial overreach that was less about interpreting the Patent Act and more about concocting policy. Alito also argued that the policy goals behind Brulotte have been “soundly refuted” and that the bar against royalties for post-expiration sales restricts parties from efficiently structuring agreements to reflect the risk of certain types of research.

Check back later in the week for in-depth analysis of this decision. For Managing IP’s coverage of the oral arguments, click here.

more from across site and SHARED ros bottom lb

More from across our site

Jevon Louis explains how Covid led to a focus on local clients, discusses why mediation is successful in Singapore and reflects on the growing demand for AI advice
An increase in instructions from domestic companies and litigation for international clients are driving success for the Chinese IP firm, according to two lead partners
Ankur Sangal said he wants his team, nearly 30-strong already, to respond to a growing demand for specialist, commercially focused IP advice in a ‘rapidly evolving’ Indian market
As AI adoption accelerates across corporate IP departments, Simon Webster, president of IP at Clarivate, argues that success will depend less on technology alone and more on data quality, workflow design, and organisational readiness
After months of speculation over his next move, former Texas patent judge Alan Albright has found a new home at the firm’s Austin office
Law firms can now participate in the research for the Managing IP Awards and IP STARS rankings
The firm has hired former Norton Rose Fulbright patent prosecution leader Ronak Kalhor-Witzel as it seeks to strengthen its position in high-value technology, UPC and international patent matters
Angela Dunning shares why it’s an exciting time to be practising at the intersection of AI and IP, where the law is actively being made
The Dutch division is cementing its position as the UPC's primary alternative to Germany, with a consistent share of filings and growing market influence
Junior lawyers aren’t unwilling to work hard, as some seniors believe; rather, they are rejecting traditional career advancement models that have limited payoff
Gift this article