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Eligio C. Pimentel


For more than 20 years, Eligio has litigated and tried complex, high-stakes patent cases in courts across the United States. He has represented clients in billion-dollar federal court disputes, as well as in arbitrations, including one resulting in a $166 million dollar award in favor of his client. As trial counsel, Eligio uses these experiences to guide all aspects of trial strategy and preparation, including complex discovery and related post-grant proceedings before the U.S. Patent and Trademark Office. The result is pragmatic and cost-effective dispute resolution.

Eligio also maintains an active transactional practice, advising clients on a range of issues including the acquisition, development and transfer of intellectual property in the context of business mergers and divestitures.  He also counsels clients on strategic management of corporate IP rights (e.g., patent and trademark portfolio management), freedom to operate opinions, brand protection, and licensing.

His successful litigation and transactional practice has touched on a diverse spectrum of technologies, including orthopedic implants, semiconductor devices, coronary stent delivery systems, fuel cells, ocular implants, thermal hand-held labelers and printers, ultrasonic medical devices, barcode scanners, and machine vision products.  Eligio's clients benefit from the hands-on experience he gained working for several years as an engineer at 3M Company and Bechtel Corporation.

Accolades received over the years include:

  • "I've said this several times now to my law clerk but I thought I ought to say it to you folks because when the verdict comes in, inevitably one side will be happy, one side will be disappointed.  I thought this was a very well-tried case by both sides.  I really, you know, patent cases are not the easiest kinds of cases to present to a jury.  I thought every single lawyer here did a superb job making the issues straightforward, as simple as they reasonably could be made.  The disputes that counsel raised were confined to serious matters, and you didn't waste the jury's or my time with unnecessary issues.  I really think regardless of the outcome, both sides have reason to be proud as lawyers of the work you did."  (Federal District Court Judge)
  • "I have sat through an unbelievable number of trials, not quite so many arbitrations and the level of professionalism and the advocacy in this case has been exceptional in my judgment." (Senior Arbitrator, retired Federal District Court Judge)
  • "McAndrews rocks!  As always, you guys put together a great strategy that allowed truth and justice to prevail!  I continue to be impressed with the high quality of the people and work at McAndrews.  I have taken the opportunity to send the opinion out to several people, showing them that this sort of early, straight on approach can produce great results.  I'm sure you will understand that I refer to it as the "McAndrews Shock and Awe" approach to patent litigation.  Thanks again for an outstanding effort."  (Deputy General Counsel)
  • "Great news.  Congratulations, great work.  That one got nipped in the bud [via summary judgment]...Well strategized and executed."  (VP Intellectual Property)
  • "I have now read your claim construction brief, and I wanted to say that I thought it was excellent work.  Comprehensible even to a non-technical person and (in my view) compelling...I do realize that you and the McAndrews team must be working all hours to comply with the ludicrous schedule imposed upon us, and it is very much appreciated."  (Director Intellectual Property)

Eligio grew up in the California Central Valley, the son of migrant farm workers.  As a result, he is a long-time avid supporter of educational opportunities for economically disadvantaged children.  Eligio is a past member of the Board of Directors of the Mary Crane Center and the Cristo Rey Jesuit High School.  Currently he serves as a member and vice-chairman of the Illinois State Board of Education.  Eligio tries to maintain life balance through sport, and is a 9-time Ironman® triathlon finisher, including the Ironman® World Championship in Hawaii.  Eligio lives in Oak Park with his wife of 25 years and his three children.

Representative Matters

  • T-Rex Property AB v. ContextMedia Inc., et al. (N.D. Ill. 2016) (patent infringement case involving digital information displays).
  • Illinois Tool Works Inc. and Miller Electric Mfg. Co. v. The ESAB Group Inc. and Victor Technologies International Inc. (E.D. Wisc. 2016) (patent infringement and breach of contract case involving welding equipment).
  • The Lincoln Electric Company, et al. v. Seaberry Soluciones, et al. (N.D. Ohio 2015) (patent infringement case involving welding training technology).
  • Stryker Corp., et al. v. Zimmer, Inc., et al. (W.D. Mich. 2014) (patent infringement case involving personal protection systems).
  • Cognex Corp., et al. v. Microscan Systems, Inc. et al. (S.D. N.Y. 2013) (patent infringement case involving barcode scanners and machine vision products).
  • Reaux Medical Industries LLC v. Stryker Corp. et al. (N.D. Tex. 2012) (patent infringement case involving personal protection systems).
  • Verco Decking Inc. v. Consolidated Systems, Inc. (D. Ariz. 2011) (patent infringement case involving structural steel decking tools).
  • Polyguard Products, Inc. v. W.R. Meadows, Inc. (N.D. Tex. 2011) (patent infringement case involving sealant based moisture barrier composite membranes).
  • Reaux Medical Industries LLC v. Stryker Corp. et al. (N.D. Tex. 2009) (patent infringement and trade secrets case involving personal protection systems; jury verdict in favor of client).
  • Thomas F. Winters v. Stryker Corp. (M.D. Fl. 2006) (patent infringement case involving portable infusion pumps; dismissed after early summary judgment motion).
  • ICU Medical, Inc. v. ALARIS Medical Systems, Inc. (C.D. Cal. 2004) (patent infringement case involving needle-less valves for use with intravenous tubing; requests for TRO and preliminary injunction denied in favor of client).
  • Boston Scientific Corp., et al. v. Guidant Corp., et al. (N.D. Cal. 2002) (patent infringement case involving angioplasty catheters).
  • Zimmer, Inc. v. Howmedica Osteonics Corp. (N.D. Ind. 2002) (patent infringement case involving orthopedic implants).
  • Advanced Cardiovascular Systems, Inc. v. Medtronic AVE, Inc. (N.D. Cal. 1999) (patent infringement arbitration case involving bona fide PTCA perfusion catheters; permanent injunction and favorable verdict of $166 million).
  • Comtec Information Systems, Inc. v. Monarch Marking Systems, Inc. (D. R.I. 1996) (patent infringement case involving bar code readers).
  • Advanced Cardiovascular Systems, Inc. v. Medtronic, Inc. (N.D. Cal. 1995) (patent infringement case involving angioplasty catheters; client awarded enhanced damages and permanent injunction).
  • Advanced Cardiovascular Systems, Inc. v. SciMed Life Systems, Inc. (N.D. Cal. 1995/96) (related patent infringement cases involving angioplasty catheters).


  • Minority Powerbrokers Q&A: McAndrews' Eligio Pimentel, Law360 (December 16, 2014) View File.
  • What Not To Say To Competitors, Post-MedImmune, Executive Counsel, (December/January 2013)
  • Value of IP Portfolios at Stake, Pending Supreme Court Decisions Crucial, Executive Counsel, (February/March 2011)


  • Presenting Complex Cases To A Jury, Annual Minority Bar CLE Conference (June 2013)
  • Brand Protection In China: Recent Cases, Managing Intellectual Property Conference (May 2013)
  • Supreme Court IP Review, McAndrews, Held & Malloy's Annual IP Symposium (July 2012)
  • The Current State of Intellectual Property in View of Pending Supreme Court Cases, McAndrews, Held & Malloy's Annual IP Symposium (May 2011)

Professional & Community Involvement

  • Illinois State Board of Education, Member and Vice-Chairman
  • Cristo Rey Jesuit High School Board of Directors, Past Member and Chair of Jobs Committee
  • Mary Crane Center Board of Directors, Past Member
  • Richard Linn American Inn of Court, Past Master Member
  • Hispanic National Bar Association, Member
  • American Bar Association, Member

Areas of Practice


Bar Admissions / Registrations

  • U.S. District Court for the Northern District of Illinois, Trial Bar
  • U.S. District Court for the Western District of Michigan
  • U.S. District Court for the Eastern District of Wisconsin
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Patent and Trademark Office


  • University of Minnesota, J.D., cum laude
  • Stanford University, B.S.M.E.