Expert Witness & Litigation Support

Expert Witness & Litigation Support



  • Dr. Brody is an experienced expert witness for intellectual property and contract matters. During his expert witness engagements, Dr. Brody has prepared opinions or assisted preparation of opinions on patent infringement, written description, validity, damages, materiality and willful infringement. The infringement and validity analyses have included means-plus-function, doctrine-of-equivalence and secondary indicia of non-obviousness considerations. Dr. Brody has also testified at trial and at hearings, has been deposed on his opinions, has prepared responses to questions for Markman hearings, helped prepare attorneys for Markman presentations and has selected patents and claims for assertion.  In support of and in opposition to motions for summary judgment, Dr. Brody has prepared numerous declarations and has prepared declarations as part of IPR proceedings.
  • Example Cases:
Sunrise Telecom v. Acterna (engaged on behalf of Acterna) – No. 05-CV-00174 (E.D. Tex.)
  • Type of Matter – Patent Infringement
  • Law Firm – ReedSmith,  New York,  NY
  • May 2005 – August 2005 - Served as an expert witness on case involving digital subscriber line (DSL) test equipment. Developed client’s position with respect to non-infringement and invalidity. Helped develop claim constructions. Provided declaration in support of client’s non-infringement and invalidity briefs for injunctive relief hearing.
  • Disposition – Settled.
Katz v. Citibank, et al (engaged on behalf of Katz) – No. 05-CV-00142 (E.D. Tex.)
  • Type of Matter – Patent Infringement
  • Law Firm – Cooley Godward Kronish, Reston, VA
  • June 2005 – May 2008 - Served as an expert witness involving telecommunications call center technology.
  • Disposition – Settled.
800 ADEPT, Inc. v. Murex Securities, Ltd., et al. (engaged on behalf of 800 ADEPT)  – No. 02-CV-1354 (M.D. Fla. - Orlando)
  • Type of Matter – Patent Infringement and Tortious Interference
  • Law Firm – Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A., Orlando, FL and Maher, Guiley and Maher, P.A., Orlando, FL
  •  Oct. 2005 – Oct. 2006 - Served as expert witness involving call routing technology designed to deliver a call to the most appropriate service provider location based on distance between the caller and service provider location or other defined criteria. Prepared expert witnessand rebuttal reports with respect to the invalidity of Murex’s asserted patents, the validity of 800 ADEPT’s asserted claims and charges of inequitable conduct against the 800 ADEPT patents’ inventor. Wrote declarations in support of 800 ADEPT’s motion for summary judgment and in opposition to Murex’s motion for summary judgment. Helped prepare demonstrative exhibits for trial. Testified at deposition. Testified at trial both as a direct and rebuttal expert witness.
  • Disposition – Jury verdict and final judgment in favor of 800 ADEPT. All Murex asserted claims found invalid, and all claims of two key patents found to be invalid including one patent that had passed reexam. No inequitable conduct was found. All 800 ADEPT asserted claims found to be valid.
  • Download Jury Verdict Form .
Katz v. AEP, et al (engaged on behalf of Katz)  – No. 07-ML-01816-B (C.D. Cal.) and No. 07-ML-1816-C (C.D. Cal.)
  • Type of Matter – Patent Infringement
  • Law Firm – Cooley Godward Kronish, Reston, VA
  • January 2006 – Present - Serving as an expert witness involving telecommunications call center technology. Prepared report and declarations in opposition to Defendants' invalidity arguments with respect to invalidity of the claims asserted by Katz. Prepared report and declaration in opposition to Defendants' arguments of materiality of references purported to be undisclosed by Katz. Deposed for 30 hours on the above reports.
  • Disposition – Ongoing.
Katz v. AIG, et al (engaged on behalf of Katz)  – No. 07-ML-01816-B (C.D. Cal.) and No. 07-ML-1816-C (C.D. Cal.)
  • Type of Matter – Patent Infringement
  • Law Firm – HellerEhrman LLP,  Menlo Park,  VA and  Covington & Burling LLP, San Francisco, CA
  • November 2006 – Present - Serving as an expert witness involving telecommunications call center technology. Prepared report and declarations in opposition to Defendants' invalidity arguments with respect to invalidity of the claims asserted by Katz. Prepared report and declaration in opposition to Defendants' arguments of materiality of references purported to be undisclosed by Katz. Deposed for 15 hours on the above reports.
  • Disposition – Work completed.
Sunrise Telecom, Inc. v. VeEx, Inc. (engaged on behalf of VeEx, Inc.) – No. 1-07-CV-078643 (Cal. Super.  Ct. –  Santa Clara  County)
  • Type of Matter – Theft of Trade Secrets
  • Law Firm – ReedSmith, San Francisco, CA
  • February 2007 – September 2007 - Served as an expert witness on case involving portable Telecom test equipment.  Identified materials in the public domain available to client that would let them design, develop, market and sell their products without theft of trade secrets.  Prepared declaration in support of opposition to a preliminary injunction against the client.
  • Disposition – Settled.

  • Neutral Tandem, Inc. v. Peerless Network, LLC. (engaged on behalf of Neutral Tandem Inc.) – No. 08-CV-03402 (N.D. Ill.)Type of Matter – Patent Infringement
  • Law Firm – Jenner & Block LLP, Chicago, IL
  • June 2009 – Present - Serving as an expert witness on case involving specialized networks for call routing of transit traffic between carriers. Also assisting in inter partes reexamination. Testified at Markman hearing, preliminary injunction hearing and deposition.
  • Disposition – Order in favor of the Defendant.

AT&T, Inc. v. TiVo, Inc. (engaged on behalf of TiVo, Inc.) – No. 4:10-CV-01050 (N.D. Cal.)
  • Type of Matter – Patent Infringement
  • Law Firm – Irell & Manella, LLP, Los Angeles, CA
  • September 2010 – January 2012 - Serving as an expert witness on case involving television program recording technology.
  • Disposition – Settled. 
Fujitsu Limited v. Belkin International, Inc., et al. (engaged on behalf of Belkin International, Inc., et al.) – Case No. 10-CV-03972 (N.D. Cal. – San Jose)AT&T, Inc. v. TiVo, Inc. (engaged on behalf of TiVo, Inc.) – No. 4:10-CV-01050 (N.D. Cal.)


Adobe Systems, Inc. v. Wowza Media Systems, Inc. (engaged on behalf of Wowza Media Systems, Inc.) – Case No. 411-cv-02243-CW. (N.D. Cal. – San Jose)
  • Type of Matter – Patent Infringement
  • Law Firm – Kirkland & Ellis LLP
  • March 2012 – November 2014 – Serving as expert witness on case involving communications protocols for multimedia communications.
  • Disposition – Settled.
Comcast IP Holdings LLC v. Sprint Communications Company L.P. et al. (engaged on the behalf of "Sprint”) – Case No. 1 :12-CV-00205-RGA. (D. – Del.)Sprint Communications Company L.P. v. Comcast Cable Communications, LLC et al. (engaged on behalf of "Sprint”) – Case No. 1 :12-CV-01013-RGA. (D. – Del.)Comcast IP Holdings LLC et al. v. Sprint Communications Company L.P. et al. (engaged on the behalf of "Sprint”) – Case No. 2 :12-CV-00859-JD. (E.D. – Pa.)Cox Communications, Inc. et al v. Sprint Communications Company L.P. et al. (engaged on the behalf of "Sprint”) – Case No. 1 :12-CV-00487-SLR. (E.D. – Pa.)
  • Type of Matter – Patent Infringement
  • Law Firm – Shook Hardy & Bacon L.L.P.
  • October 2012 – Present – Serving as expert witness on cases involving IP telephony billing, and video-on-demand.
  • Disposition – Ongoing.
Virginia Innovation Sciences, Inc. v. Samsung Electronics Co., Ltd., et al (engaged on behalf of Virginia Innovation Sciences, Inc.) – No2:12-CV-00548-MSD-DEM (E.D. VA – Norfolk Div.)
  • Type of Matter – Patent Infringement and IPR
  • Law Firms – Nelson Bumgardner Casto, P.C. (litigation) and Birch Stewart Kolasch Birch LLP (Inter Partes Review)
  • May 2013 – September 2014 - Serving as an expert witness on case involving the conversion of multimedia video to formats compatible with display devices in a wireless environment.
  • Disposition – Settled.
NobelBiz Inc. v. Global Connect L.L.C.., (engaged on behalf of NobelBiz.) – No6:12-cv-244-MHS (E.D. TX – Tyler Div.)
NobelBiz Inc. v. TCN Inc.., (engaged on behalf of NobelBiz.) – No6:12-cv-247-MHS (E.D. TX – Tyler Div.)
  • Type of Matter – Patent Infringement and IPR
  • Law Firm – Gibbons, P.C. and Venable L.L.C.
  • November 2013 – September 2015 - Serving as an expert witness on case involving the modification of Caller ID on outbound telephone calls.
  • Disposition – Jury verdict in favor of the NobelBiz on all counts.
  • Download Amended Memorandum and Order. 
Zipit Wireless, Inc. v. Blackberry Ltd., el al (engaged on behalf of Blackberry) – Civil Action No. 6:13-CV-2959-JMC (D.S.C.)
  • Type of Matter – Patent Infringement and IPR
  • Law Firm – Ropes & Gray and Oblon
  • June 2014 – Present - Serving as an expert witness on case involving instant messaging communications and service access control.
  • Disposition – Ongoing.
Metaswitch Networks Ltd. v. Genband US, LLC, et al, (engaged on behalf of Genband) – Civil Action No. 2:14-cv-744 (E.D. TX – Marshall)
  • Type of Matter – Patent Infringement
  • Law Firm – Baker Botts LLP
  • June 2015 – March 2016 - Serving as an expert witness on case involving media gateways and media gateway controllers.
  • Disposition – Jury verdict in favor of Genband – no infringement
  • August 2016 – Present - Serving as an expert witness on theft of trade secrets
  • Disposition – Transferred to Texas State Court.
Quest Licensing Corporation v. Bloomberg, et al, (engaged on behalf of Bloomberg, Schwab, IDC and FactSet) – Civil Action No. 14-cv-561-GMS (D. De.)
  • Type of Matter – Patent Infringement
  • Law Firms – Wilson Sonsini, Goodrich & Rosati, Robinson & Cole LLP and Brinks Gilson & Lione
  • June 2016 – December 2016 - Serving as an expert witness on case involving mobile devices, servers, client interfaces and updating the mobile devices with changing data.
  • Disposition – MSJ in favor of the Defendants.
24/7 Customer, Inc. v. LivePerson, Inc., (engaged on behalf of 24/7 Customer, Inc – Patent Owner) – Inter Partes Review Nos. IPR2017-00609, -00610, -00612, -00613, -00614, and -00615
  • Type of Matter – Patent Infringement
  • Law Firms – O’Melveny & Myers
  • January 2017 – Present - Serving as an expert witness for Inter Partes Review involving routing of incoming requests from different communications modalities to best call center resources.
  • Disposition – Ongoing.
Straight Path IP Group, Inc. v. Cisco Systems, Inc., (engaged on behalf of Cisco Systems, Inc.) – Civil Action No. 3:16-cv-03463 (N.D. Cal.)
  • Type of Matter – Patent Infringement
  • Law Firms – Baker Botts LLP and Desmarais LLP
  • February 2017 – November 2017 - Serving as an expert witness on case involving Internet Telephony.
  • Disposition – MSJ in favor of Defendants on non-infringement .
TQ Delta, LLC. vs. 2Wire, Inc., Zyxel Communications, Inc. and Adtran, Inc., (engaged on behalf of TQ Delta) – Civil Actions No. 13-cv-1835-RGA, 13-cv-2013-RGA and 4-cv-954-RGA (D.Del.)
  • Type of Matter –    Patent Infringement
  • Law Firms –    McAndrews, Held & Malloy, Ltd.
  • January 2018 – Present - Serving as an expert witness on case involving xDSL technologies.
  • Disposition – Ongoing.
Azarax, Inc. v. Wireless Communications Venture LLC, et al, (engaged on behalf of Wireless Communications Venture) – Civil Action No. 16-cv-03228-JRT-LIB., (D.Mn.)
  • Type of Matter –  Breach of contract and fraud
  • Law Firms –  Faegre, Baker Daniels LLP
  • February 2018 – Present - Serving as an expert witness with respect to meeting technical commitments .
  • Disposition – Ongoing.
VoIP-Pal.com, Inc. v. Verizon Wireless Services, LLC, et al., (engaged on behalf of AT&T) – Case No. 16-cv-00271 (D.Nev.)
  • Type of Matter –  Patent Infringement
  • Law Firms –    Baker Botts, LLP
  • February 2018 – March 2019 - Serving as an expert witness on case involving routing of calls to public and private networks.
  • Disposition – Invalidity at IPR .
TRUSTID, Inc. v. Next Caller Inc., (engaged on behalf of Next Caller Inc.) – Civil Action No. 1:18-cv-00172-L (D.De.)
  • Type of Matter –   Patent Infringement
  • Law Firms –      McDermott Will & Emery LLP
  • June 2019 – Present - Serving as an expert witness on case verification of ANI and Caller ID.
  • Disposition – Ongoing .


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