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Patentee cannot recapture claim scope disavowed during prosecution to prove infringement

In a decision Friday, the Federal Circuit affirmed a district court's claim construction and its concomitant grant of summary judgment of noninfringement, as well as its denial of attorney fees under § 285. The district court held the patentee had, during prosecution of the patent at issue, made a clear and unmistakable disavowal of claim […]

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Dependent claim can be construed to be broader than independent claim based on prosecution history

In a decision last week, the Federal Circuit held a district court construed 1 of 2 claim terms correctly, and incorrectly concluded that prosecution history estoppel barred application of the doctrine of equivalents to a third claim term because the narrowing amendment was only tangentially related to the equivalent at issue. As a result, the […]

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Another preliminary injunction vacated on appeal, this time because of claim construction

For a second time this week, the Federal Circuit vacated a preliminary injunction entered by a district court. This time, the court found the district court's claim construction too broad, and under the courts revised, narrower construction, found that the plaintiffs were not likely to succeed on the merits of the case. As a result, […]

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Claims requiring an “insert” do not cover products with similar structure not “inserted”

In a decision Wednesday, the Federal Circuit affirmed a district court ruling granting summary judgment of non-infringement. At the outset, the court noted the patent at issue had been before the court multiple times, and the claim terms at issue in this appeal had already been construed by the court in earlier cases.As the district […]

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Infringement of two claims and $74 million in damages affirmed, injunction reinstated

In a decision last week, the Federal Circuit affirmed-in-part and reversed-in-part a jury verdict of infringement of a patent owned by Tivo relating to its DVR technology. The ruling was based on claim construction, with the court finding that, based on the correct construction of claims directed to the DVR hardware, there was no infringement […]

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Claim construction excluding disclosed embodiment improper absent disclaimer of some kind

In a decision today, the Federal Circuit reversed a district court's claim construction and the associated summary judgment of noninfringement. The district court's construction of one of the claim limitations resulted in certain embodiments of the invention disclosed in the figures to be excluded from the scope of the claims. Based on this construction, the […]

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Sufficient structure recited in claim limitation using “means” to prevent application of – 112 – 6

In a decision yesterday, the Federal Circuit reversed a district court's claim construction and the associated summary judgment of noninfringement. The district court held the relevant claim term was a means-plus-function limitation, as it used the word "means," as well as because in an interview summary in the prosecution history, it appeared the USPTO interpreted […]

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When market entry fee part of damages for patent infringement, permanent injunction inappropriate

In a recent decision, the Federal Circuit affirmed a finding of infringement of a patent relating to the detection and classification of Hepatitis C Virus, but remanded the case for a determination of anticipation. In arguably the most interesting aspect of the decision, the court vacated the permanent injunction entered against the defendant. The plaintiff […]

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Federal Circuit again tackles the meaning of “a”

In a decision this week, the Federal Circuit affirmed-in-part and reversed-in-part a district court's grant of summary judgment of non-infringement with respect to two patents relating to cleaning printing press cylinders. Both findings were based on issues of claim construction, with one centering around an issue that has reached the Federal Circuit multiple times: the […]

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Pre-KSR obviousness instruction does not result in plain error post-KSR

In a decision this week, the Federal Circuit affirmed findings of infringement of two patents by two defendants. The court also reversed an invalidity ruling of one of one claim that had been the subject of reexamination, but remanded the case to the district court for a determination of the obviousness of one claim based […]

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