In this patent infringement action, the defendant moved to exclude portions of the plaintiff’s (Dr. Bambos’) expert testimony. Defendant argued that Dr. Bambos lacks familiarity with the infringing products, relied too heavily on someone else to provide him with relevant segments of source code to review, and used the district court’s claim construction to determine how the products work.
In analyzing the motion, the district court noted that “Dr. Bambos never used the allegedly infringing products, but his expert opinion was based on ‘thousands of pages of technical manuals, source code, and depositions transcripts.’ (D.I. 221 at p.1) (See D.I. 221-4 at 3-6; D.I. 221-3 at 2-5). Rule 702 requires that expert testimony be based on “sufficient facts or data.” Dr. Bambos need not use the product if, as here, he has familiarized himself with it in other ways. Reviewing source code and other materials can be sufficient.”
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