In 1975, Precismeca granted Melco an exclusive right to manufacture certain items known as 'rollers and idlers' under a licensing agreement, in return for payment of royalties. The agreement required Melco to account on a half-yearly basis for payments due. The agreement's preamble indicated that Precismeca had applied for registration of the trademark 'Precismeca' and wished to grant Melco an exclusive right to manufacture the product 'in accordance with the Patents applied for'. Precismeca undertook to apply diligently for registration of patents and the trade mark, and to license Melco under the patents once granted. Clause 3.5 provided that until the licences were granted, the licensing agreement itself would operate as a licence in respect of the patents applied for. No licences in respect of patents were ever granted and the trade mark user agreement was not concluded. The patents referred to in the agreement had expired at the time of action - two before the conclusion of the agreement and one thereafter. The parties performed under the agreement for over 20 years. Precismeca (having taken cession of all rights under the agreement) sued Melco for disclosure of the number of items manufactured and for payment of royalties. Melco filed a special plea of absence of jurisdiction, which was upheld by the High Court (Mlambo J).