Catchwords:

PATENTS – infringement – construction of claims –whether the primary judge erred in finding that there is ambiguity in the claim language – error shown

PATENTS – best method – s 40(2)(a) Patents Act 1990 (Cth) – whether failure by patentee to describe in the specifications of the patents the best method known to it of performing the invention – failure to disclose particular type of transceiver – no error shown