Starbuck v Patsystems (UK) Ltd
Decision date: 8 March 2017
Neutral citation: [2017] EWHC 397 (IPEC)
Overall AI summary confidence: high
Short overview
This short overview is intended to summarise the case, issues and outcome so far as they are supported by the judgment.
AI confidence in this short overview: high
This case concerned whether a 1999 Assignment transferred copyright in all versions of the NSA software (including v3.1) to Patsystems, whether later modifications were owned by Starbuck, and whether Patsystems proved that Starbuck’s ACE software infringed any NSA copyright. The court held the Assignment (read with background knowledge) covered all NSA versions including v3.1, that Starbuck did not establish ownership of the 2001 modifications, and that Patsystems failed to prove ACE reproduces protected expression of NSA so its infringement counterclaim failed.
Ratio decidendi
This summary is intended to identify the ratio decidendi, meaning the legal reasons for deciding and the binding part of the decision.
AI confidence in this ratio decidendi summary: medium
Where a contract describes subject‑matter of assignment by a general functional description and the parties were aware of multiple versions, that description can be interpreted to include later or experimental versions known to the parties; clear contractual definitions prevail over recitals or subjective post‑contract statements. Also, a claimant alleging software infringement must adduce adequate evidence (e.g. source comparisons or expert analysis) to prove copying of protected expression; non‑production of source code does not alone determine the issue.
Obiter dicta
This summary is intended to identify obiter dicta, meaning observations made by the way that were not necessary to deciding the case and are not binding.
AI confidence in this obiter dicta summary: medium
The judgment suggests (obiter) that reconstructed witness recollection, even if unreliable, is not necessarily dishonest if the witness genuinely believes it; that courts should be cautious about invoking a free‑standing notion of "commercial common sense" independent of contract language; and that parties should timely pursue available disclosure/inspection routes since failure to do so may undermine proof of infringement.
Warning
the chunk contains duplicated and noisy formatting and repeated passages; care was taken to judgment the judge's findings only. Notes contain duplicated and noisy formatting; findings were extracted from those notes and may not reflect the full judgment.