Legal issues

Cross-cutting view of legal principles, recurring arguments, and the prior art the court relies on.

Filtering to principle: Patent amendments must satisfy Art. 84 EPC clarity requirements

Most-litigated legal principles

Recurring legal principles across 1 cases with reasoning extracted. Success rate counts patentee-favorable outcomes only.

Principle	Cases	Decided	Patentee success
purpose indications in device claims define suitability for the stated function, not actual use	1	1	100%
for novelty with a purpose-limited device claim, prior art must disclose a device having all structural features and be suitable for the purpose (or require modification to be suitable)	1	1	100%
exhaustion under art. 29 upca extends to normal maintenance and repair, but not to re-manufacture of the patented product	1	1	100%
re-manufacture vs. repair test: whether the replacement preserves the identity of the specific patented product placed on the market	1	1	100%
where patentee defends only via auxiliary requests, no obligation to examine partial invalidity of originally-granted claims	1	1	100%
auxiliary claim sets must each contain all independent claims in allowable form to support maintenance on that auxiliary request	1	1	100%
patent amendments must satisfy art. 84 epc clarity requirements	1	1	100%

Most-rejected arguments

Arguments that the UPC has not accepted, ranked by repeat occurrences across cases.

Argument	Party	Cases
exhaustion: defendants' filter cartridges are legitimately supplied replacement parts for products placed on market by brita	Respondent	1
patent claims as originally granted are valid (revocation counterclaim)	Respondent	1
where patentee defends only via auxiliary requests (amended claims), court must first consider whether original claims are partially invalid under art. 65(3) upca	Respondent	1

Most-cited prior art

References relied on across substantive merits cases, with the role they typically play.

No prior-art data in the current scope.