Dennis Crouch

Columbia

Law Professor and Blogger, PatentlyO at Freelance

Patent Attorney and Law Professor

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Articles

Federal Circuit Affirms Trademark Refusal for "US SPACE FORCE" Mark

6 days ago | patentlyo.com | Dennis Crouch

NEW: Patently-O Paid MembershipJoin thousands of patent law professionalsManage your AccountReset your password, Manage Subscriptions, Force logout. Free Daily E-MailAbout 25,000 individuals now receive Patently-O via e-mail each morning. Find a patent jobWe regularly post top patent jobs from leading firms, corporations, and government and educational institutions.
How the Federal Circuit's 'Particularized Testimony' Rule Further Threatens the Doctrine of Equivalents

1 week ago | patentlyo.com | Dennis Crouch

NEW: Patently-O Paid MembershipJoin thousands of patent law professionalsManage your AccountReset your password, Manage Subscriptions, Force logout. Free Daily E-MailAbout 25,000 individuals now receive Patently-O via e-mail each morning. Find a patent jobWe regularly post top patent jobs from leading firms, corporations, and government and educational institutions.
The Federal Circuit's Rigid Approach to Secondary Considerations

1 week ago | patentlyo.com | Dennis Crouch

by Dennis CrouchPurdue Pharma has filed a petition for certiorari asking the Supreme Court to review what it characterizes as the Federal Circuit’s overly rigid application of the “nexus” requirement for objective indicia of non-obviousness.
Inherency's Limited Role in Obviousness Analysis

1 week ago | patentlyo.com | Dennis Crouch

by Dennis CrouchThe Federal Circuit’s 1993 decision in In re Rijckaert, 9 F.3d 1531 (Fed. Cir. 1993), set an important boundary on the use of inherency in obviousness determinations. I recently reread the case and wanted to reintroduce the case that continues to be regularly cited in both patent prosecution and litigation.
A Legally Problematic Half-Measure

2 weeks ago | patentlyo.com | Dennis Crouch

NEW: Patently-O Paid MembershipJoin thousands of patent law professionalsManage your AccountReset your password, Manage Subscriptions, Force logout. Free Daily E-MailAbout 25,000 individuals now receive Patently-O via e-mail each morning. Find a patent jobWe regularly post top patent jobs from leading firms, corporations, and government and educational institutions.
Will the Court Require Congress to Say the "Magic Words?"

2 weeks ago | patentlyo.com | Dennis Crouch

NEW: Patently-O Paid MembershipJoin thousands of patent law professionalsManage your AccountReset your password, Manage Subscriptions, Force logout. Free Daily E-MailAbout 25,000 individuals now receive Patently-O via e-mail each morning. Find a patent jobWe regularly post top patent jobs from leading firms, corporations, and government and educational institutions.
World IP Day 2025

2 weeks ago | patentlyo.com | Dennis Crouch

NEW: Patently-O Paid MembershipJoin thousands of patent law professionalsManage your AccountReset your password, Manage Subscriptions, Force logout. Free Daily E-MailAbout 25,000 individuals now receive Patently-O via e-mail each morning. Find a patent jobWe regularly post top patent jobs from leading firms, corporations, and government and educational institutions.
The Federal Circuit's Latest Stance on AAPA

3 weeks ago | patentlyo.com | Dennis Crouch

NEW: Patently-O Paid MembershipJoin thousands of patent law professionalsManage your AccountReset your password, Manage Subscriptions, Force logout. Free Daily E-MailAbout 25,000 individuals now receive Patently-O via e-mail each morning. Find a patent jobWe regularly post top patent jobs from leading firms, corporations, and government and educational institutions.
The Priority Paradox: In re Floyd Highlights the Dual Standards of Written Description and Anticipation

3 weeks ago | patentlyo.com | Dennis Crouch

NEW: Patently-O Paid MembershipJoin thousands of patent law professionalsManage your AccountReset your password, Manage Subscriptions, Force logout. Free Daily E-MailAbout 25,000 individuals now receive Patently-O via e-mail each morning. Find a patent jobWe regularly post top patent jobs from leading firms, corporations, and government and educational institutions.
The Hughes-Reyna Divide Continues: Dongkuk v. US

3 weeks ago | patentlyo.com | Dennis Crouch

In a new decision released April 21, 2025, the Federal Circuit has given us another example of the jurisprudential divide between Judges Hughes and Reyna–something that I’ve followed across numerous opinions. Dongkuk v. US continues this pattern in a case involving antidumping duties on Korean wind towers.