This opinion concerns an appeal from the United States Court of Appeals for the Federal Circuit concerning a patent infringement case. The plaintiffs-appellees, including Laboratory Corporation of America Holdings, successfully sued defendants-appellants Qiagen Sciences, LLC, for infringing their U.S. Patent 10,017,810 and U.S. Patent 10,450,597, which relate to methods for preparing DNA samples. The jury initially awarded damages to the plaintiffs; however, the Court of Appeals reversed the lower court's decision, finding insufficient evidence to support the infringement claims for both patents. The core of the appeal centers on the interpretation of specific claim terms within the patents, particularly how "identical" and "target-specific primer" should be understood in the context of DNA sequencing preparation. The court concluded that the district court erred in denying Qiagen's motion for judgment as a matter of law, leading to a reversal of the infringement findings.

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