Generic formulation of chemical composition

G. W. A. Milne

World Patent Information, 1991, vol. 13, issue 2, 76-80

Abstract: The practice of including generic, or 'Markush' specifications in definitions of chemical composition has been known in patents for over 60 years. It is common in United States patents, and also in those issued in other countries. In recent years, some extraordinary broad Markush claims have appeared, and such documents cause problems at all levels of the patent system. This phenomenon and its effects are discussed in this paper.

Date: 1991
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