Appeal No. 2003-2126 Application No. 10/150,318 that his heating component may comprise any component having a non-zero resistance which, of course, would include a low resistance shunt resistor of the type taught by Melcher. It is well settled that, where, as here, the claimed and prior art products are identical or substantially identical, the Patent and Trademark Office can require an applicant to prove that the prior art products do not necessarily or inherently possess the characteristics of his claimed product. Whether the rejection is based on “inherency” under 35 U.S.C. § 102, on “prima facie obviousness” under 35 U.S.C. § 103, jointly or alternatively, the burden of proof is the same, and its fairness is evidenced by the inability of the Patent and Trademark Office to manufacture products or to obtain and compare prior art products. In re Best, 562 F.2d 1252, 1255-56, 195 USPQ 430, 433-34 (CCPA 1977). This reasoning applies to the apparatus claimed by the appellant and disclosed by Melcher. Under the circumstances recounted above, it is reasonable and fair to consider patentee’s resistor 25 as possessing the heating characteristic of the here 4Page: Previous 1 2 3 4 5 6 7 NextLast modified: November 3, 2007