Use of "mechanism" in claim without more may result in means-plus-function interpretation
In a decision Monday, the Federal Circuit affirmed a district court's claim construction and related judgment of noninfringement. The decision focused on the issue of claim construction in means plus function claims. The critical limitation used the term "mechanism" without any additional structural elements, and as a result the district court construed it to be a means-plus-function claim. The Federal Circuit affirmed, noting in the past it had held limitations with the term "mechanism" without additional modifiers to be means-plus-function limitations. Because it was undisputed the accused device did not have the corresponding structure in the specification or its structural equivalent, the court affirmed the district court's grant of summary judgment.
More detail of Welker Bearing Co. v. PHD, Inc. after the jump.
