PAULINE NEWMAN, Circuit Judge.
Raymond C. Grabiak et al. appeal from the decision of the Patent and Trademark Office Board of Appeals sustaining the rejection of claims 1 through 34, all of the claims of patent application Serial No. 168,959, filed July 17, 1980 for "2-Chloro-4-Trifluoromethyl Thiazolecarbothioic Acids Useful As Herbicidal Safeners", as unpatentable under 35 U.S.C. § 103. We conclude that the PTO has not presented a prima facie...
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