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Chief Judge Stark Finds Claim Preamble Limiting in Claim Construction

Chief Judge Stark recently issued a claim construction order involving both alleged means-plus-function claims and a limiting preamble. With regard to the term “cavity forming structure,” Judge Stark found that “the claim language is sufficiently definite and provides sufficient structure for the basic function of ‘forming a cavity’” and that “Defendants have not put forth any expert testimony or other evidence to support their contrary view.” Accordingly, Judge Stark found the term should not be construed under § 112 ¶ 6. Orthopoenix LLC v. Dfine Inc., et al., C.A. No. 13-1003-LPS, Memo. Or. at 2 (D. Del. Feb. 2, 2016). Judge Stark also considered whether the claim preamble “a device for insertion into a vertebral body to apply a force” was limiting and determined that it was because it “provide[s] the antecedent basis for at least the ‘for capable of compacting cancellous bone and moving fractured cortical bone’ referred to in the claim.” Id. at 7.

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