In re Thompson

The issue presented by this appeal, the denial by the tribunals of the United States Patent Office of claims 2 and 4 of an application for a “Corrosion-Resistant Metallic Article and Method of Making the Same,” was here previously in In re Thompson et al., 31 C. C. P. A. (Patents) 1121, 143 F. (2d) 357, 61 USPQ 498.

There, all of the claims were allowed except 2 and 4, which were rejected as not being drawn in accordance with the Markush doctrine. We reversed the decision of the Board of Appeals and remanded the case for the sole purpose of having the reasons for the rejection of those claims…