The patentees had two patents relating to parts of oil rigs, coming into play to clean drill bits of cuttings on retraction. The defendants sold re-conditioned frames for this process.
Held: Where the apparent exercise of a right of repair . .

The parties disputed whether there had been an infringement of the claimant’s patent in respect for ‘intermediate bulk containers’ designed for the safe transport of liquids in bulk. They were a cage holding a plastic bottle. The defendant had a . .