Mere aid in assessing the allowability of amendments 

The board in T 1472/15, citing T 2311/10 and T 1852/13, held that, contrary to how T 331/87 had often been misinterpreted, the "essentiality test" was not absolute vis-à-vis the "gold standard" and could merely be used as an aid in ascertaining what had been originally disclosed (see also T 648/10, T 755/12, T 2095/12 and T 46/15).

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