Manvers Engineering Ltd & Anor v Lubetech Industries Ltd & Ors
Decision date: 7 November 2013
Neutral citation: [2013] EWHC 3393 (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 Lubetech's Site Mat frames combined with its Smart Liner liners infringe Manvers' patent for a portable oil-collecting mat comprising an impermeable base layer with fixed, self-supporting oleophilic walls. The court found the patent valid but not infringed: the liners alone and the assembled products did not meet the claimed integers (notably a self-supporting oleophilic wall "comprising a layer of oleophilic material" and an impermeable base, many versions of which had perforations). Attacks based on anticipation (Chwala), obviousness and added matter all 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
The proper approach to a composite-product claim is to identify its distinct structural components and match each claimed integer to the accused product; an "impermeable" base requires an element not penetrable by liquids, so perforations that admit liquid defeat that integer; and mere possibility that a user could assemble components to create a claimed feature is insufficient for infringement without evidence the product as sold or designed provides that feature.
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 expresses that IPEC procedure should not encourage pursuit of faint points with no real prospect of success, and that limited or poorly authorised experimental observations (e.g. surface-tension tests) have limited evidential weight.