Passionate about IP! Since June 2003 the IPKat has covered copyright, patent, trade mark, designs, info-tech and confidentiality issues from a mainly UK and European perspective. Read, post comments and participate!

The team is Eleonora Rosati, Annsley Merelle Ward and Merpel. E-mail the Kats here!

The team is joined by GuestKats Söğüt Atilla, Oliver Fairhurst, Claire Gregg, Georgia Jenkins and Marcel Pemsel.

SpecialKats: Verónica Rodríguez Arguijo (TechieKat), Rose Hughes (PatKat) and Jocelyn Bosse (Book Review Editor).

InternKats: Wissam Bentazar, Simone Lorenzi and Kliment Markov.
Results for g1/23
Non-reproducible products can be the closest prior art (T 1719/21) Non-reproducible products can be the closest prior art (T 1719/21) Reviewed by Dr Rose Hughes on Wednesday, December 31, 2025 Rating: 5
Non-reproducible prior art post-G 1/23: Novelty versus inventive step (T 1044/23) Non-reproducible prior art post-G 1/23: Novelty versus inventive step (T 1044/23) Reviewed by Dr Rose Hughes on Tuesday, November 18, 2025 Rating: 5
[Guest Post] Has G1/23 harmoniously recast the European law of enablement? [Guest Post] Has G1/23 harmoniously recast the European law of enablement? Reviewed by Dr Rose Hughes on Monday, November 03, 2025 Rating: 5
[Guest post] Has G1/23 harmoniously "recast" the European law of enablement? [Guest post] Has G1/23 harmoniously "recast" the European law of enablement? Reviewed by Dr Rose Hughes on Wednesday, October 15, 2025 Rating: 5
Non-reproducible commercial products are prior art (G1/23) Non-reproducible commercial products are prior art (G1/23) Reviewed by Dr Rose Hughes on Friday, July 04, 2025 Rating: 5
A more nuanced approach to the evidence standard for prior use (T 1311/21) A more nuanced approach to the evidence standard for prior use (T 1311/21) Reviewed by Dr Rose Hughes on Thursday, January 16, 2025 Rating: 5
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