USPTO not bound by district court claim construction on reexamination; obviousness affirmedAugust 22, 2007 The Federal Circuit today addressed claim construction and obviousness in the context of a reexamination appeal. The patentee argued that the USPTO was bound, in reexamination, to apply the claim construction given the patents by a district court when the patents were in litigation before reexamination. The court found that because the USPTO was not a party to that litigation, issue preclusion could not apply, and therefore the USPTO was not bound by the district court's construction. The court also applied KSR, and affirmed the Board's holding that all claims of both patents would have been obvious over the prior art, as a result of a failure to yield any unpredicted results when combining familiar elements and known methods.More detail of In re Trans Texas Holdings Corp. after the jump.This case involved Trans Texas' appeal of the decision of the Board of Patent Appeals and Interferences ("Board") affirming the examiner's rejection in reexamination of two patents, the '461 patent and the '673 patent. Trans Texas is the assignee of both patents, which describe systems of inflation-adjusted deposit and loan accounts aimed to insulate assets from fluctuations due to inflation as well as provide stability to the financial institution. Trans Texas asserted that because the claims of the patents had been construed by a district court in a previous litigation, collateral estoppel (issue preclusion) prevented the USPTO from applying a different claim construction in the reexamination. The Federal Circuit disagreed, finding that even the more modern form of non-mutual collateral estoppel was not warranted in this case, because the USPTO was not a party to the earlier litigation and cannot therefore be bound by its outcome. Trans Texas asserted in the alternative that the Board erroneously rejected its proffered claim construction. The court did not find any of Trans Texas's proposed claim constructions to be persuasive, noting that "claims are given their broadest reasonable interpretation, consistent with the specification, in reexamination proceedings," and under this standard, the Board's construction was correct. Trans Texas also appealed the Board's obviousness determination. Trans Texas asserted that numerous claims of the '461 patent were non-obvious solely based on its claim construction arguments the court already rejected. The court therefore affirmed the Board's obviousness determination for those claims.With regard to the other claims, the Federal Circuit rejected Trans Texas' other nonobviousness arguments. In particular, the court highlighted the failure to yield any unpredicted results when combining familiar elements and known methods, resulting in a finding of obviousness pursuant to the Supreme Court's recent holding in KSR. The court also rejected Trans Texas' contention that certain prior art references taught away from the invention. As a result, the rejection of all claims of the two patents was affirmed.Specifically, Trans Texas first argued that a prior art reference disclosed deposit accounts responsive to inflation and loan accounts adjusted on a proportional basis with inflation, but failed to disclose the additional limitation of loan accounts adjusted for inflation. However, the court affirmed the Board's determination that the prior art did in fact disclose each and every limitation of the claims. Trans Texas also argued that claims 1-23, 31, 33, and 44 of the '461 patent were non-obvious as a result of the additional limitation of an "annuities" requirement. However, the court found the references the Board relied upon did not teach away from "annuities." Third, Trans Texas argued that claims 9-14 and 16-21 of the '673 patent were non-obvious since the prior art does not teach the limitation "obtaining an asset whose rate of return adjusts with inflation." However, the court again concluded that the Board had sufficient evidence to find that the prior art taught this limitation. Finally, Trans Texas asserted that the prior art did not teach "obtaining . . . a mortgage secured by real estate," or making "balloon" payments. These were the limitations in claims 15, 22-24, 25, and 28 of the '673 patent. Again, the court agreed with the Board, stating that it would have been obvious to combine the loan accounts disclosed in the prior art with the commonplace practice of securing loans with mortgaged real estate, as well as combine the known inflation-adjusted loans with the known practice of making balloon payments. This case further underscores the importance of unexpected results, teaching away, or some other evidence of nonobviousness post-KSR. To read the full decision in In re Trans Texas Holdings Corp., click here. ← Return to Filewrapper