European Patent Convention
Rule 44
Unity of invention

(1)Where a group of inventions is claimed in a European patent application, the requirement of unity of invention under Article 82 shall be fulfilled only when there is a technical relationship among those inventions involving one or more of the same or corresponding special technical features. The expression “special technical features” shall mean those features which define a contribution which each of the claimed inventions considered as a whole makes over the prior art.

(2)The determination whether a group of inventions is so linked as to form a single general inventive concept shall be made without regard to whether the inventions are claimed in separate claims or as alternatives within a single claim.

Legal Texts
Our new high-speed access to the law (BETA)

Try Our Interactive EP Register Lookup

Insert the 8 digits of any EP application No.

EP