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

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

Patrícia Paias explains why she loves the science and business behind an idea and why potential rights owners must avoid the ‘file and forget’ philosophy
Lawyers eagerly await news of what IP specialist Sir Colin Birss will bring to one of the England and Wales judiciary’s most important roles
María Aurora García of Berken IP explains how intellectual property rights holders can use customs monitoring and online enforcement tools to identify parallel imports and support compliance with consumer protection rules
The Jakarta-based firm says personal networks and a distinctive strategy can help it guide foreign clients through what can be a tricky IP landscape
Munich litigation boutique formed by former Taylor Wessing partners continues expansion as it seeks to cement its position in the UPC market
Yvonne Tang and Siau Wen Lim, the second and third IP specialists to sit on the firm’s management committee, say IP is ‘uniquely positioned’ to support cross-practice work
As competing firms come under common ownership, clients may care less about formal conflicts and more about how openly firms discuss them
Facing increased lateral movement and in-house competition, firms are investing in flexible billing hours and tailored career progression to improve associate retention
As the US reflects on 250 years of independence, patent lawyers say innovation is reshaping old hiring priorities, with firms seeking broader IP expertise over specialisation
The Nokia v Acer ruling in the UK suggests arbitration is moving from the sidelines towards the mainstream of global FRAND disputes - and could reshape forum strategy in the process
Gift this article