Holly Engelmann, P.C. is a results-oriented and client-focused litigation and trial attorney with nearly 20 years of experience handling complex litigation. Holly’s practice focuses on litigation, particularly patent litigation, but also extending to complex commercial litigation, residential mortgage-backed securities litigation, insurance recovery, and bankruptcy. With clients drawn from the ranks of industry leaders and private equity firms, she has amassed substantial experience managing high-stakes litigation from client inception through verdict and settlement.
Holly also served as in-house legal counsel while on secondment at Ericsson, working with that company’s patent assertion and litigation groups. In that capacity, she managed internal business and legal aspects of preparing for and participating in multifront patent litigation in federal district court and the ITC related to Ericsson’s wireless technologies.
Holly is a graduate of Southern Methodist University, Dedman School of Law, where she was an editor of the Southern Methodist University Law Review, inductee to The Order of Barristers, and Best Advocate of the Year award recipient. During law school, Holly interned for Justice Craig T. Enoch of the Supreme Court of Texas, and Justice David W. Chew of the Eighth Court of Appeals of Texas, and served as Ticketmaster’s first legal intern.
Holly is a Steering Committee Member of the Duane Morris Women’s Impact Network for Success (“WINS”), WINS Programming Chair (Dallas office), and Steering Committee Member of the Duane Morris Diversity, Equity, and Inclusion 2022 Retreat.
Prior to law school, Holly taught high school mathematics and served as the cheerleading coach and class advisor at John Glenn High School in Norwalk, California.
Holly earned a B.A. in mathematics from Whittier College while also serving as the Sports Editor of The Quaker Campus School Paper and was a player and captain of the basketball team.
- New York
- U.S. District Court for the Northern District of Texas
- U.S. District Court for the Eastern District of Texas
- U.S. District Court for the Southern District of Texas
- U.S. District Court for the Western District of Texas
- U.S. District Court for the Southern District of New York
- Southern Methodist University, Dedman School of Law, J.D.
- Editor, Southern Methodist University Law Review
- Whittier College, B.A.
- Duane Morris LLP
- Partner, 2021-present
- McKool Smith
- Partner/Associate, 2003-2021
American Bar Association
Dallas Bar Association
Federal Bar Association
- University of North Texas, College of Law
- Adjunct Professor of Practice Foundations, 2016-present
- Center for Women in Law
- Circle of Leaders
Dallas Women Lawyers Association
Honors and Awards
- Top Women in IP Award, Texas Lawyer Texas Legal Awards, 2022
Listed in Lawdragon 500 Leading Plaintiff Financial Lawyers, 2019
Listed in Texas Super Lawyers Rising Stars, 2010-2013
Civic and Charitable Activities
Attorneys Serving the Community
Selected Speaking Engagements
Speaker, "Texas is a Diverse State and Your Trial Team Should be Too," Eastern District of Texas Bench Bar Conference, October 27, 2022
Speaker, 2019 Women in Law Institute, October 3, 2019
Speaker, ABA Judicial Intern Opportunity Program Orientation, Dallas, Texas, June 2, 2016
Speaker, Silicon Valley IP Enforcement and Monetization Summit, Palo Alto, California, April 21, 2016
Speaker, International Women’s Leadership Forum, Managing Intellectual Property, New York City, June 6, 2015
Representing Cisco in a patent infringement matter involving optical transceiver technology. Ramot at Tel Aviv Univ., Ltd. v. Cisco Systems, Inc., Case No. 2:22-cv-00168-JRG.
Representing Verizon in a patent infringement matter involving location and tracking technology. AGIS Software Development LLC v. Verizon Communications Inc., Case No. 2:22-cv-00185-JRG.
Representing Verizon in a patent infringement matter involving network resources management technology. Telecom Network Solutions, LLC v. Cellco Partnership d/b/a Verizon Wireless, Case No. 2:21-cv-00416-JRG.
Representing Trend Micro in a patent infringement matter involving network and computer security products. Taasera Licensing LLC v. Trend Micro Inc., Case No. 2:21-cv-00441-JRG.
Represented Verizon in a patent infringement matter involving location-based technology. Enovsys v. Verizon Communications, Inc., Case No. 2:21-cv-00315-JRG.
Represented BMC Software, Inc. in a patent infringement dispute involving ITSM software solutions. BMC Software v. ServiceNow, Inc., Case No. 2:14-cv-00903-JRG.
Represented ContentGuard Holdings Inc., a Xerox PARC-seeded company, in four district court litigations involving fundamental digital rights management patents. ContentGuard Holdings, Inc. v. Google, Inc., Case No. 2:14-cv-00061-JRG; ContentGuard Holdings, Inc. v. Apple, Inc., Case No. 2:13-cv-01112-JRG; ContentGuard Holdings, Inc. v. DIRECTV, LLC, Case No. 2:15-cv-00128-JRG; ContentGuard Holdings, Inc. v. Huawei Device USA, Inc. et al, Case No. 2:16-cv-00176-JRG.
Representing Chapter 7 Bankruptcy Trustee in pursuit of claims against Blue Cross Blue Shield and United Healthcare.
Represented TruSun Technologies in a patent infringement suit against Eaton involving LED technologies. TruSun Technologies et al. v. Eaton et al., Case No. 6:19-cv-00656-ADA.
Representing Trend Micro in a patent infringement matter involving network and computer security products. Trend Micro, Inc. v. Taasera Licensing LLC, Case No. 3:22-cv-00518.
Represented Lockheed Martin in an antitrust suit involving refurbishment of P-3 fixed wing maritime surveillance aircraft. L-3 Communications Integrated Systems LP v. Lockheed Martin Corp., Case No. 3:07-cv-00341.
Representing Cisco and Acacia in patent infringement suits involving optical transceiver technology. Cisco Systems, Inc. v. Ramot at Tel Aviv Univ., Ltd., Case No. 1:22-cv-00674 and Case No. 1:21-cv-01365.
Represented Yahoo, Inc. in a suit brought by Droplets Inc., for alleged patent infringement, seeking $260 million and a finding of willful infringement. An Oakland federal jury found no infringement with respect to four Yahoo products and, on the one remaining product, awarded less than 7% of Droplets’ damages demand. The jury also did not find any willful infringement. Droplets, Inc. v. Yahoo! Inc., Case No. 4:12-cv-03733-JST.
Represented Respondent Holochip in an International Trade Commission Investigation involving focus-tunable lenses. In the Matter of Certain Tunable Lenses and Products Containing the Same, Inv. No. 337-TA-1282.
Represented TiVo subsidiary Rovi adverse to Comcast in an International Trade Commission Investigation involving numerous patents related to interactive television program guides, DVR technology, and related technologies. In the Matter of Certain Digital Video Receivers, Broadband Gateways, and Related Hardware and Software Components, Inv. No. 337-TA-1158.
Represented Ericsson in multiple patent infringement disputes in the International Trade Commission related to LTE, WCDMA, GSM/GPRS/EDGE, and 802.11 wireless technology and FRAND/RAND standard issues. In the Matter of Certain Electronic Devices, Including Wireless Communication Devices, Tablet Computers, Media Players, and Televisions, and Components Thereof, Inv. No. 337-TA-862; In the Matter of Certain Wireless Communications Equipment and Articles Therein, Inv. No. 337-TA-866.
Represented the Trustee in multiple residential mortgage backed securities litigation. HSBC (Trustee) v. Nomura Credit & Capital.
Represented the Trustee in multiple residential mortgage backed securities litigation. HSBC (Trustee) v. Merrill Lynch, Countrywide, Bank of America.