Automated Summary
Key Facts
The court denied Natera, Inc.'s motion to exclude expert testimony from Dr. Joshua P. Earl and Dr. Daniel E. Krane in two patent infringement cases (C.A. No. 21-669-GBW and C.A. No. 21-1635-GBW) involving Laboratory Corporation of America Holdings. The motion argued that the experts improperly used claim language from the asserted patents (10,604,799; 11,149,308; 11,155,863) without applying the court's prior claim constructions. The court found no clear legal basis to exclude the testimony, noting that the experts' analysis focused on source code functionality rather than direct infringement opinions and that prior rulings on similar motions had already been made.
Issues
- Whether Dr. Krane's opinions on prior art invalidity contradict the Court's claim constructions of 'descriptions' and 'combining', and if such testimony should be excluded as a result.
- Whether Defendant's Motion to Exclude expert testimony under Daubert should be granted, arguing that Dr. Earl's and Dr. Krane's use of claim terms like 'sequence reads' and 'combining' without applying the Court's constructions could mislead the jury.
Holdings
- The court denies the motion to exclude Dr. Earl's expert testimony, finding that his use of claim language in describing source code does not constitute an improper infringement opinion. The court acknowledges potential juror confusion but deems the defendant's argument cursory and unconvincing, allowing Dr. Earl's testimony while suggesting a stipulation to avoid using the contested terms if feasible.
- The court also denies the motion to exclude Dr. Krane's testimony, ruling that his opinions on prior art not invalidating the claims are not clearly contradicted by the court's claim constructions. The court emphasizes that such issues should be addressed at summary judgment or trial, not through reconsideration of prior rulings.
Remedies
The Court denies the Motion to Exclude under Daubert Expert Testimony That Fails to Apply the Court's Claim Constructions (D.I. 190). The motion sought to exclude testimony from Dr. Earl and Dr. Krane, but the Court ruled that their challenged opinions do not require exclusion at this stage. The Court also orders the parties to meet and confer regarding potential stipulations to avoid juror confusion related to claim terms.
Legal Principles
The court denied the motion to exclude expert testimony under Daubert, applying Federal Rule of Evidence 702. The analysis focused on whether the experts' testimony adhered to the court's claim constructions. The court determined that while the experts used claim terms, their testimony did not improperly opine on infringement and thus was admissible. This decision emphasized the gatekeeping role of the court in ensuring expert testimony is reliable and relevant, consistent with the legal standards outlined in Daubert and Rule 702.
Precedent Name
- Schneider v. Fried
- Sonos, Inc. v. D & M Holdings Inc.
- Invitae Corp. v. Natera, Inc.
- Martinez v. Union Pac. R. Co.
- EcoFactor, Inc. v. Google LLC
- Masimo Corp. v. Philips Elec. N. Am. Corp.
- MBO Lab'ys, Inc. v. Becton, Dickinson & Co.
- 10X Genomics, Inc. v. Bruker Spatial Biology, Inc.
- Phillips v. AWH Corp.
- Cirba Inc. v. VMware, Inc.
- Trudell Med. Int'l Inc. v. D R Burton Healthcare, LLC
- GN Netcom, Inc. v. Plantronics, Inc.
Cited Statute
- Federal Rules of Civil Procedure
- Federal Rules of Evidence
Judge Name
Gregory B. Williams
Passage Text
- Thus, '[t]he Court adopts its earlier [O]rder[] on this point; no further reconsideration is called for.' 10X Genomics, Inc. v. Bruker Spatial Biology, Inc., No. 21 C 653, 2024 WL 5201115, at *10 (D. Del. Dec. 23, 2024).
- For the foregoing reasons, the Court denies the Motion (D.I. 190). WHEREFORE, at Wilmington this 5th day of June 2025, IT IS HEREBY ORDERED that the Motion (D.I. 190) is DENIED.
- Thus, at this time, the Court denies Defendant's request to exclude Dr. Earl's testimony. See Chevron (HK) Ltd. v. One World Techs., Inc., No. CV 19-1293-GBW, D.I. 470 at 38 (D. Del. Jan. 13, 2025).