David D’Ascenzo

Founding Partner | Intellectual Property Attorney

David has been an intellectual property attorney since 1996 and feels privileged to work with the variety and caliber of clients who entrust him with their intellectual property needs. David respects the fact that the intellectual property arena is a complicated, expensive, and risky area and that clients often have only one opportunity to secure the proper protection and advice. He enjoys being an intellectual property attorney and believes that this sincere enthusiasm is reflected in his work and the many years that he has been fortunate to work with his current clients.

David was born and raised in the west Texas town of El Paso. He attended Rice University in Houston, Texas, where he was awarded numerous academic scholarships and earned a B.S. in chemical engineering. At Rice, David was honored as Rice’s Outstanding Junior Engineer. Prior to earning his undergraduate degree, David also worked at Duke University, where he taught applied mathematics and engineering mechanics to a select group of gifted and talented students.

Before entering law school, David worked for Lyondell Petrochemical Corp. in Houston, Texas. At Lyondell, he developed computer-model simulations that were used to design proposed units in a newly developed butene isomerization process and to support worldwide technology licensing of Lyondell’s complex hydrogenation processes.

In 1996, David earned a J.D. degree from the University of Texas School of Law. While in law school, David was the Editor-in-Chief of the Texas Intellectual Property Law Journal and was honored as a member and officer of the law school’s Board of Advocates, a society of students chosen for excellence in oral and written advocacy. David was selected by Professor John F. Sutton, Jr. to assist in the writing and research for a new edition of the casebook Professional Responsibility, authored by Sutton and Dzienkowski.

David is rated as a top intellectual property attorney by Super Lawyers.

Practice Areas

David’s intellectual property practice is about as varied as they come. His clients range from individual inventors and start-up companies to established, multinational corporations. He advises clients on the full spectrum of intellectual property law, from initial evaluations of inventions and potential trademarks, to worldwide licensing, defense, and enforcement of his client’s intellectual property rights. David’s practice includes substantial trademark and international components, as well as patent prosecution in such varied fields as fuel cells, sporting goods, petrochemical and gas generation, processing, and purification, tools, toys, firearms, and household chemical and electrical products. David has successfully prosecuted hundreds of patents and trademarks in the U.S. and foreign countries, and has litigated and otherwise enforced his clients’ rights on multiple occasions. He is an experienced negotiator and frequently counsels clients on such diverse topics as freedom to operate opinions, strategic acquisitions, licensing, international intellectual property, Customs and international treaties, and trademark and patent development strategies.


B.S. Chemical Engineering
Rice University
The University of Texas at Austin School of Law

Bar Admissions, Court Admissions, Professional Organizations

  • Oregon State Bar
  • Washington State Bar
  • District of Oregon
  • Western District of Washington
  • United States Court of Appeals for the Federal Circuit
  • United States Patent and Trademark Office


Outside the office, David enjoys recreational cycling and soccer. He began playing soccer when he was five years old, played on several state championship teams as a youth, and continues to enjoy the game today. He is a former U.S.S.F. referee, has coached adult and youth teams, and currently is an avid fan of Portland’s Timbers and Thorns.

David’s other interests include playing poker and woodworking. David’s interest in woodworking lies not only in the hands-on use of tools; but also in the tools themselves, as David is a named inventor of more than twenty tool-related patents and was a founder of the SawStop brand of table saws.