Checkpoint Systems, Inc. v. All-Tag Security s.a.

How courts have described this case

Verbatim parenthetical descriptions written by other courts when citing this decision. Ranked by citation-network relevance.

• holding that the original PTO declarations create a genuine issue of material fact
• rejecting argument that non-party assignor should be barred from submitting testimony regarding failure to name inventors under doctrine of assignor estoppel
• “The law has long looked with disfavor upon invalidating patents on the basis of mere testimonial evidence absent other evidence that corroborates that testimony.”
• “The doctrine of assignor estoppel prevents a party that assigns a patent to another from later challenging the validity of the assigned patent.”
• “If nonjoinder of an actual inventor is proved by clear and convincing evidence, a patent is rendered invalid.”
• nonjoinder of inventor must be “ ‘proved by clear and convincing evidence’ ”

Source: CourtListener parenthetical corpus (CC0).