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Signature Systems competitive analysis

Discover the latest PTAB cases involving Signature Systems, highlighting their recent legal challenges and patent disputes.

Last updated on: Feb 2, 2026

Proceeding Number	Filing Date	Petitioner	Respondent	Status
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CBM2018-00035	Apr 23, 2018	AMERICAN EXPRESS	SIGNATURE SYSTEMS	Final Written Decision
CBM2015-00153	Jun 12, 2015	AMERICAN EXPRESS	SIGNATURE SYSTEMS	Institution Denied

IP litigation analysis comparing Signature Systems with top 3 competitors. Includes complete PTAB case data and opposition data from 2018 onwards.

Last updated on: Jan 29, 2026

Company	Oppositions Filed	Oppositions Faced	PTAB Cases Filed	PTAB Cases Faced
SIGNATURE SYSTEMS	-	-	-	2
AMERICAN EXPRESS	-	-	6	-