|Source:||All England Reporter|
|Publisher Citation:|| All ER (D) 16|
|Representation||Michael Fysh QC and Adrian Speck (instructed by Paisner & Co) for the plaintiffs.|
|Mark Platts-Mills QC and Charlotte May (instructed by Freshfields) for the defendant.|
|Judgment Dates:||15 January 1999|
Patent - Validity of patent - Obviousness - Factors to be considered when determining whether development obvious.