Appeal 2007-0224 Application 09/754,785 never ruled that methods without any transformation are eligible, and appears in Schrader to have rejected that proposition. We believe that “process” should not be broadened so as to include any and every method that may be deemed useful. The Supreme Court’s and Federal Circuit’s articulated eligibility tests keep the interpretation of “process” in pari materia with the other three categories of inventions – manufacture, machine, and composition of matter. In other words, interpreting “process” as either transforming subject matter or implemented by one of the other three categories of inventions is rationally consistent with and proportional to the types of inventions patented under the other categories.5 See Tilghman v. Proctor, 102 U.S. 707, 722 (1880) (“where the implemented process, not involving any transformation, might be patentable. The answer to that question is still provided by Schrader, and that answer, so far, is negative. While AT&T indicated that Schrader is “unhelpful” because it did not reach the question whether a “useful, concrete, and tangible result” occurred, the reason that case did not need to reach that question was because it found that Schrader’s method claims were unpatentable for lack of any transformation. In addition, Schrader’s claims did not require machine-implementation, unlike AT&T’s claims. See AT&T, 172 F.3d at 1358, 50 USPQ2d at 1452 (“AT&T’s claimed process” uses “switching and recording mechanisms to create a signal useful for billing purposes.”). Moreover, it is axiomatic that dicta in one Federal Circuit panel decision cannot overrule the holding of an earlier panel decision. George E. Warren Corp. v. United States, 341 F.3d 1348, 1351 (Fed. Cir. 2003) (“We cannot simply overrule [a prior panel] decision, even if we were persuaded . . . that it is appropriate; to overrule a precedent, the court must rule en banc” (citing Newell Cos. v. Kenney Mfg. Co., 864 F.2d 757, 765, 9 USPQ2d 1417, 1423 (Fed.Cir.1988)). 5 We do not propose in this decision a comprehensive rule for defining patentable subject matter in all circumstances. Rather, this decision 20Page: Previous 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Next
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