The tests for determining the validity of a design patent issued pursuant to 35 U.S.C. Sec. 171 are identical to those tests currently espoused by this court for determining the validity of a utility patent issued pursuant to 35 U.S.C. Sec. 101. In re Nalbandian, 661 F.2d 1214, 211 USPQ 782 (C.C.P.A.1981). Section 171 mandates this rule: "[t]he provisions of this title [title 35] relating to patents for inventions shall apply to patents for designs, except as otherwise provided."Accordingly, 35 U.S.C. Sec. 103 (and all the case law interpreting that statute) applies with equal force to a determination of the obviousness of either a design or a utility patent. Section 103 prohibits a patent from issuing when the "differences between the subject matter sought to be patented and the prior art are such that the subject matter as a whole would have been obvious at the time the invention was made * * *." As in any analysis of the obviousness issue, we must consider the scope and content of the prior art, the differences between the prior art and the claims at issue, and the level of ordinary skill in the art at the time the invention was made.