Expert Witness

Below is a history of Dave Howell’s expert contributions to legal cases since 2017.

The cases range from infringement and validity (including three PTAB Inter Partes reviews) to contract infringement and wrongful death. Dave was hired to:

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

Litigation & Consultation History

Beijing Meishe Network Technology v. TikTok Inc et al

No. 6:21-cv-504

in progress

Consultation

Spence v. Dexcom et al

No. 3:18-cv-369

in progress

Consultation

Intuit v. Samsurf

PTAB-IPR 2023-339, 341, 342

04/19/2023

Declaration for patent owner

Captova Technologies v. Amazon Web Services

AAA/ICDR No. 01-21-004-9950

12/14/2022

Deposed regarding my expert report

08/30/2022

Amazon Web Services, Inc.’s Expert Report

Vivint v. SkyBell Technologies

No. 2:21-cv-09472

08/10/2022

Source code review

KuhnMcCullen Logistics v. Pek Pongpaet et al

No. 20CV362436

08/2021

Advised legal team, analyzed evidence and source code repository

SensorRx v. Eli Lilly and Company

No. 3:19-cv-643

11/12/2021

Deposed regarding my expert report

11/10/2021

SensorRx’s Expert Report

Miller Mendel and Tyler Miller v. The City of Oklahoma City

No. 5:18-cv-990

12/29/2020

Plaintiff’s Expert Rebuttal Report on Claim Construction

12/11/2020

Plaintiff’s Expert Report on Claim Construction

Guardian Alliance Technologies v. Tyler Miller

PTAB-IPR 2020-00031 (inter partes review)

01/21/2020

Declaration of David Howell

Perfect Company v. Adaptics Limited

No. 3:14-cv-5976, consolidated with 3:17-cv-5922

04/02/2019

Perfect Company’s Expert Rebuttal Report on Validity of ’365 and ’217 Patents

03/23/2019

Deposed regarding my reports on infringement

03/06/2019

Perfect Company’s Amended Expert Report on Infringement of U.S. Patent 8,829,365 B2

03/06/2019

Perfect Company’s Expert Report on Infringement of U.S. Patent 9,772,217 B2

11/30/2018

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

Perfect Company v. Adaptics Limited

No. 3:14-cv-5976

09/13/2018

Deposed regarding my expert report and rebuttal report

03/07/2018

Perfect Company’s Expert Rebuttal Report on Validity

02/27/2018

Attended deposition of expert Harry Direen on behalf of plaintiff, wrote internal report on observations

01/22/2018

Perfect Company’s Expert Report on Infringement

10/20/2017

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

Adaptics Limited et al v. Perfect Company

PTAB-IPR 2018-01596 (inter partes review)

05/09/2017

Perfect Company’s Expert Report on Claim Construction by David S. Howell