Expert Witness

Dave Howell has been retained as an expert witness in these cases:

Adaptics Limited et al v. Perfect Company
PTAB-IPR2018-01596: inter partes review

Pure Imagination, LLC v. Adaptics Limited et al
No. 3:14-cv-05976: patent infringement & validity

Perfect Company v. Adaptics Limited
No. 3:17-cv-05922: patent infringement & validity

Guardian Alliance Technologies, Inc. v. Tyler Miller
PTAB-IPR2020-00031: inter partes review

Miller Mendel Inc et al v. City of Oklahoma
No. 5:18-cv-00990: patent infringement & validity

Miller Mendel Inc v. City of Anna, Texas et al
No. 2:21-cv-0445-jrg: patent infringement

SensorRx, Inc. v. Eli Lilly and Company
Civil Action No. 3:19-cv-643-rjc-dck: contract infringement

These cases variously centered around patent infringement, patent validity, and contract infringement. Dave was hired to:

  • Write expert opinions
  • Assist in claim construction
  • Give and attend depositions
  • Testify in Federal Court
  • Perform source code inspections
  • Provide general technical consultation to attorneys

Public Record

While the source code inspections and some deposition content are sealed, some of Dave’s writing is publicly available.


Proceedings held before Judge Ronald B. Leighton: Markman Hearing. Plaintiff called David Howell.


Proceedings held before Judge Ronald B. Leighton. Markman Hearing. Plaintiff called David Howell.