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

Anita Polott, who is celebrating three decades at Morgan Lewis this year, reflects on career progression, stepping into unfamiliar territory, and leadership frameworks
Technical excellence remains essential, but many firms are discovering that packaging IP with complementary practice areas can unlock new clients and a stronger competitive position
As international interest in Southeast Asia grows, Sheng Rong Tng discusses how changing client demands and the firm’s multidisciplinary model are helping it compete for complex regional mandates
Todd Hopfinger, director in Sterne Kessler’s electronics practice group, says IP owners are contemplating how patent rights will be enforced as commercial activity expands beyond Earth
Christopher Stothers' arrival strengthens the firm's life sciences, technology and UPC offering as competition for top European litigators intensifies
Armstrong Teasdale’s Jim Heinen Jr discusses the challenge of balancing billables, business development and family life and explains why not all patent lawyers are science nerds
From cross-border jurisdiction to the end of the transitional period, Powell Gilbert’s Ioana Sabau and Bryce Matthewson predict the biggest talking points ahead
A wave of office launches and lateral hires reflects the draw of patent disputes, but booming AI, semiconductor and data centre markets are offering an even bigger IP opportunity
The hire of Frederick Nicolle as a partner continues Pinsent Masons' expansion while reducing Simmons’ patent prosecution offering in London to zero
The expansion into Granada forms part of a national ‘decentralisation’ strategy focused on providing proximity to research and tech businesses away from traditional hubs
Gift this article