Appeal No. 2002-2110 Page 3 Application No. 09/224,748 detecting positron-sensitive gamma-rays emitted from the surface using a pair of oppositely positioned positron-sensitive gamma-ray detectors, and characterization of the emitted gamma rays by positron emission tomography. Claims 17 and 18 stand rejected under 35 U.S.C. § 112, ¶ 1, as non-enabled. Claims 1, 2, and 4-8 stand rejected under 35 U.S.C. § 103(a) as obvious over U.S. Patent No. 4,983,841 ("Stewart"). Claims 9-13 stand rejected under § 103(a) as obvious over Stewart and U.S. Patent No. 5,453,615 ("Mis"). OPINION Our opinion addresses the rejections in the following order: • non-enablement rejection of claims 17 and 18 • obviousness rejections of claims 1, 2, and 4-13. Non-enablement Rejection of Claims 17 and 18 Rather than reiterate the positions of the examiner or the appellants in toto, we address the main point of contention therebetween. Observing that, "[t]he [appellants'] specification at page 5 defines and distinguishes specifically chemical surface features (as recited in the preamble of independent claim 17) as 'regions of different reactivity to tracer material' (line 25)," (Examiner's Answer at 4), the examiner asserts, "[w]hen aPage: Previous 1 2 3 4 5 6 7 8 9 10 11 NextLast modified: November 3, 2007