In re Kroekel

MARKEY, Chief Judge.

This appeal is from a decision of the Patent Office Board of Appeals which upheld the examiner’s rejection of all of appellants’ claims under 35 U.S.C. § 112. No appeal was taken with respect to claim 13. The case presents the question of whether a three-component composition claim which recites the amounts for the components as 20 to 80% by weight, 20 to 80% by weight, and 1 to 25% by weight, embracing a theoretical composition having a total weight of 101%, is sufficiently definite to satisfy the requirements of 35 U.S.C. § 112, second paragraph. We conclude that it is.…