Keith L. Slenkovich


Slenkovich, Keith L.

Keith Slenkovich represents companies in intellectual property disputes and complex commercial litigation. As first chair trial counsel, Mr. Slenkovich has tried dozens of cases in venues throughout the country, earning a reputation for his ability to win the most difficult cases, including his perfect win record for intellectual property trials. In addition to state and federal jury trials, Mr. Slenkovich's practice includes substantial experience representing companies in Section 337 cases before the US International Trade Commission, as well as before international tribunals such as the Hong Kong International Arbitration Centre. 

In addition to his trial practice, Mr. Slenkovich has successfully argued appeals to state and regional circuit courts throughout the nation, and has substantial experience handling post-grant proceedings before the PTAB. 

Mr. Slenkovich is admitted to practice in the State of California and before the United States Supreme Court, the United States Court of Appeals for the Federal Circuit, the United States Court of Appeals for the Ninth Circuit, the Supreme Court of California, the United States District Court for the Eastern District of Texas and all United States District Courts of California.

Mr. Slenkovich has been a frequent lecturer in patent and other intellectual property law courses at institutions such as the University of California, Berkeley (Boalt Hall) and Santa Clara University.

Honors & Awards

  • Recognized in the 2009-2017 editions of Northern California Super Lawyers for his intellectual property litigation practice
  • Named to the Daily Journal's 2013 and 2015 lists of "Top Intellectual Property Lawyers" in California for his leadership and innovation
  • Received the 2013 Robert G. Sproul, Jr. Award from the Lawyers Committee for Civil Rights for providing outstanding legal representation to under-represented communities
  • Recipient of the 2012 John H. Pickering Pro Bono Award for Exemplary Dedication to the Provision of Pro Bono Publico Legal Services

Publications & News


November 6, 2017

Increasing Role of Objective Indicia of Nonobviousness in AIA Proceedings

In this article published by Bloomberg Law's Patent, Trademark & Copyright Journal, authors Keith Slenkovich and Kevin Yurkerwich direct practitioners to carefully develop objective indicia evidence, and responses challenging the sufficiency of such evidence.

December 13, 2016

Civil Rights Groups Sue Caltrans to Stop Illegal Raids Against California's Homeless

According to a lawsuit filed today by civil rights groups, the California Department of Transportation is violating the constitutional rights of homeless people by confiscating and destroying their property in ongoing sweeps.

July 29, 2016

Ways Manufacturers Can Shut Down Unauthorized Resellers

An article by Keith Slenkovich, published by Law360, discusses steps that brand owners should take to protect their companies and products from meaningful harm caused by unauthorized resale activity.

June 9, 2016

Demand Letter Challenging the Seizure and Destruction of Homeless Individuals’ Personal Property Delivered to San Francisco Mayor

In response to recent sweeps, in which the city and its agents have taken, discarded and/or destroyed property belonging to homeless individuals without proper notice or the opportunity for them to reclaim their belongings, a coalition of three legal groups delivered a demand letter to San Francisco Mayor Ed Lee charging that these practices are unlawful.

March 3, 2016

Energy Sector Alert Series: As Oil Prices Descend, Patent Enforcement Litigation Increases Within Energy Industry

The recent slump in oil prices has impacted oil and gas companies in a variety of ways, some to be expected, some less so. One unwelcome development is that while these companies have been implementing cost-savings and other measures to offset decreasing revenues, their expenditures on patent infringement litigation have been increasing.

April 23, 2015

Daily Journal Honors Three Partners Among Top IP Lawyers in California

Partners David Marcus, Mark Selwyn and Keith Slenkovich have been named to the Daily Journal's annual list of California's Top Intellectual Property Lawyers, which recognizes attorney achievements in the field of intellectual property from successfully arguing novel theories of law and winning significant cases to protect client portfolios.

March 13, 2015

Teva Pharmaceuticals v. Sandoz: New Rules for Claim Construction Review

An article by Keith Slenkovich, Katherine Lin and Michael Van Handel, published in the Boston Patent Law Association’s Spring 2015 Newsletter, Vol. 26, Issue 1.

September 27, 2013

Law360 Names WilmerHale Pro Bono Firm of the Year for Second Consecutive Year

For the second consecutive year, Law360 selected WilmerHale to its "Pro Bono Firms of the Year" list for notable successes.

April 22, 2013

Selwyn and Slenkovich Selected to Daily Journal’s 2013 List of “Top Intellectual Property Lawyers”

Each year the list is compiled to honor attorney achievements in the field of intellectual property. Both Selwyn and Slenkovich were selected as two of 75 litigators who have led and won key IP cases at both national and international levels.

March 20, 2013

The Daily Journal Publishes “More Operating Companies Asserting Patent” By Keith Slenkovich

An article by Partner Keith Slenkovich, published in March 20, 2013 edition of The San Francisco Daily Journal.

Recent Highlights

In recent years, Mr. Slenkovich's work has included the following matters:

  • Lead trial counsel for plaintiff in three-patent case involving semiconductor bus arbitration and energy conservation technology. Obtained judgment as a matter of law of validity and infringement of principal patent, leaving only damages to be tried. The next court day after achieving JMOL of liability, obtained highly favorable settlement for client. 
  • Lead trial counsel for respondent in International Trade Commission investigation related to semiconductor bus termination technology. Obtained trial victory of no violation for client on three alternative grounds: invalidity, non-infringement and lack of domestic industry. Trial victory upheld by full Commission.
  • Represented plaintiff in patent case arising out of solar cell and semiconductor manufacturing equipment technology. As lead trial counsel, obtained first verdict of validity, infringement and permanent injunction following the seminal KSR v. Teleflex decision. Successful verdict, which was upheld on appeal, prevented defendant from bringing to market product line which had threatened $1 billion annual market.
  • Represented respondent as lead trial counsel before International Trade Commission in action seeking to bar importation of client's semiconductor chips on the basis of alleged process patent infringement. Obtained determination from ALJ and full commission that patent was invalid, resulting in finding of no violation.
  • Represented defendant in trade secrets case involving competing semiconductor companies. As lead trial counsel, successfully defended case against threatened product injunction, achieving dismissal of all claims.
  • Represented plaintiff as lead trial counsel in declaratory judgment action challenging the enforceability of patents related to internet marketing technology on basis of inequitable conduct. Obtained uncompensated, worldwide license to all patents at issue.
  • Represented plaintiff in trade secrets case involving semiconductor process technology. As lead trial counsel, obtained permanent injunction barring use of proprietary technology and former employee contact with competitor.
  • Represented respondent before International Trade Commission in action seeking exclusion order barring importation of digital cameras on the basis of alleged patent infringement. Achieved favorable settlement following ITC hearing and Office of Unfair Import Investigations findings that all patents were invalid and not infringed.
  • Lead counsel in case alleging trade libel and trademark infringement case arising out of mobile application advertising campaign. Obtained early settlement and cessation of campaign. 
  • Represented plaintiff in claims arising out pharmaceutical plant's high purity gas delivery system. As lead trial counsel, obtained $26 million trial victory for client. 

Professional Activities

Mr. Slenkovich is a member of the American Bar Association (Intellectual Property Section), the International Trade Commission Trial Lawyers Association and the Intellectual Property Owners Association, Standards Setting Committee.

Community Involvement

Mr. Slenkovich is currently a Director for the Lawyers Committee for Civil Rights. Mr. Slenkovich recently served Board Chairman and Director of Silicon Valley Habitat for Humanity.


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JD, University of California, Berkeley School of Law, 1987

BA, cum laude, Colorado College, 1983, Phi Beta Kappa

Bar Admissions


United States Supreme Court

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