[United States] In re Butler (CAFC, September 17, 2025)
Updated: Oct 9
Article information
Content type: Case note
Categories: United States
Issues: Disclaimer claims / Written description
First published on this site: 2026-10-03
Display and classification checked: 2026-10-03
[United States] In re Butler (CAFC, September 17, 2025)
To support a negative limitation (a disclaimer) in a claim, the specification needs to explain, in some form, a reason for excluding the relevant component.
The component to be excluded should be one that is disclosed and distinguishable from alternative elements.
(If the specification distinguishes a component from its alternatives, that can be one reason for excluding that component.)
Original article: https://lnkd.in/gQXZV3Rc
Original source shown in the LinkedIn preview: https://www.cafc.uscourts.gov/opinions-orders/23-2380.OPINION.9-17-2025_2574190.pdf
Originally posted on LinkedIn: https://www.linkedin.com/feed/update/urn:li:activity:7511585326193127424/
Related articles
Update and correction history
Dated entries are added for corrections, supplements, classification, display, and related-article changes, separately from the first publication date.
2026-10-03: First publication on this site from the LinkedIn original.
Consultation guide by purpose: https://www.takaishihideki.com/en/single-post/consultation-guide-en
Comments