In W 5/92
the board considered it to be implicit in the definition of R. 13.1 PCT that the "invention" be considered in the broadest sense. Thus, according to PCT Search Guidelines VII-5 (PCT Gazette No. 30/1992, Sec. IV; No. 29/1993, Sec. IV, no longer in force; for similar guidance see paragraph 10.05 of the PCT International Search and Preliminary Examination Guidelines, as in force from 25.3.2004), the mere fact that an international application contained claims of different categories or several independent claims of the same category was in itself no reason for objection on the grounds of lack of unity of the invention.