Beecham Group Ltd v Bristol-Myers Company (No 2) - [1980] 1 NZLR 192

Patents — Opposition proceedings — Appeal from Assistant Commissioner's refusal to grant letters patent for the penicillin "Amoxycillin" — Bristol opposed the grant of a patent on the grounds of prior publication and obviousness — Whether there was a prima facie case justifying the issue of a patent — Whether the claim clearly did not involve any inventive step — Patents Act 1953, ss 21 and 97.