Karl R. Fink
“At Fitch Even, we strive to recognize and live up to the trust placed in us for handling all matters, from relatively minor disputes to bet-the-company cases.”

Karl R. FinkPartner

120 South LaSalle Street
Suite 2100
Chicago, IL 60603VCard
312.577.7007 fax
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J.D., University of Michigan, 1981
B.S., Engineering, University of Michigan, 1978, magna cum laude


Technical Areas

Bar & Court Admissions

lllinoisTrial Bar for the Northern District of IllinoisU.S. Patent and Trademark OfficeIllinois Supreme CourtU.S. Supreme CourtU.S. Court of Appeals for the Federal and Seventh CircuitsNumerous U.S. District Courts


Leading Lawyers Network Member in Intellectual Property Law and Patent Law (2004–20)
Named to the Illinois Super Lawyers list for Intellectual Property Litigation (2005–06, 2008–20)

Karl R. Fink has been a partner in the firm since 1995. His practice includes all aspects of commercial litigation and intellectual property litigation, creation, management, enforcement, and licensing, with particular emphasis on patent litigation. Karl has been a full-time first-chair trial lawyer since 1981, handling hundreds of lawsuits in state and federal courts across the country, both at trial and on appeal. He represents numerous public and privately held companies, ranging in size from start-ups to Fortune 100 companies. Karl's litigation practice also includes the handling of inter partes reviews in the U.S. Patent and Trademark Office.

Clients have sought Karl’s counsel in a wide variety of intellectual property, commercial, and tort litigations. He has served as lead trial counsel for patent, trademark, unfair competition, copyright, and trade secret actions and has handled patent infringement actions, both on the plaintiff's side and the defendant's side. Karl handles alternative-fee and contingent-fee actions, as well as traditional hourly fee matters.

Karl has litigated complex cases involving an extensive range of technologies, products, industries, and issues. These include the following:

  • Gypsum wallboard
  • Advertising literature
  • Foam padding for sports use
  • Software
  • Remote controls
  • Digital imaging
  • Interactive computer interfaces
  • Electronic signaling, encryption
  • Digital media
  • Graphical user interfaces
  • Data transmission
  • Convergence of data
  • Sound and video transmission
  • Mechanical controls
  • Biotechnology
  • Medical devices
  • Blood processing
  • Digital microscopy
  • Defibrillators
  • Farm equipment
  • Furniture design
  • Mineral processing
  • Disposable diapers
  • Electronic components
  • Inductors
  • Fire and smoke alarms
  • Car waxers
  • Wristwatches
  • Sirens and alarms
  • Soap dispensers
  • Engine cooling systems
  • Windshield wipers
  • Printing presses
  • Punch and brake presses
  • Trademarks, and
  • Copyrights

Karl has played a leading role in numerous successful patent enforcement and licensing campaigns on behalf of the firm's clients. Clients also rely on Karl for advice regarding infringement, validity and patentability opinions, IP valuation, joint ventures, IP licensing, and other related business decisions.

Karl previously served as Fitch Even’s Managing Partner and is currently a member of the firm's Executive Committee.

United States Gypsum Co. v. National Gypsum Corp. (D. Del. 2017–present). Representing plaintiff in patent litigation involving gypsum wallboard composition and manufacture.

Limestone Memory Systems LLC v. Micron Technology, Inc. et al. (N.D. Cal. 2016–present). Representing plaintiff in patent litigation involving semiconductor memory devices.
Vaxcel Int’l Co., Ltd. v. HeathCo, LLC, et al. (N.D. Ill. 2015). Represented defendant in patent litigation involving dimmable LED lighting technology. Resolved on a confidential basis.

Somaltus, LLC v. Auto Meter Prods., Inc. (E.D. Tex. 2015). Represented defendant in patent litigation involving automobile battery testing and charging technology. Resolved on a confidential basis.

Olivistar, LLC v. The Chamberlain Group, Inc. (E.D. Tex. 2015). Represented defendant in patent infringement action involving network control of garage door openers. Resolved on a confidential basis.

McDavid Knee Guard, Inc. and Stirling Mouldings Ltd. v. Nike USA, Inc. (N.D. Ill. 2014). Represented plaintiffs in patent infringement action involving foam padding for sports apparel. Resolved on a confidential basis.
Bullets2Bandages, LLC v. Caliber Corp. (S.D. Cal. 2014). Represented Caliber in defense of a trademark infringement action. Case was settled in six months with Caliber taking assignment of the registered trademarks.
Milbon Co., Ltd. et al. v. Hair Color Research Group, Inc. et al. (N.D. Ill. 2013). Represented Milbon in this action for trademark infringement. Settlement negotiations resulted in an agreed permanent injunction and judgment being entered in favor of Milbon.
The Chamberlain Group, Inc. and Johnson Controls Interiors LLC v. Lear Corp. (N.D. Ill. 2011). Represented Chamberlain in a patent infringement action involving a rolling code encryption system for use with garage door openers. Confidential settlement reached on courthouse steps immediately before trial with Judge Posner. Obtained preliminary injunction against infringement. (software patent, antitrust)
Desa IP LLC and Heathco LLC v. EML Technologies LLC and Costco Wholesale Corp. (M.D. Tenn. 2009). Represented plaintiffs in patent infringement action involving light fixtures. Confidential settlement reached immediately before trial after granting of summary judgment on inequitable conduct claim in favor of plaintiffs. (patent)
Coilcraft v. Inductor Warehouse (N.D. Ill. 2008). Represented Coilcraft in this trademark infringement action against Inductor Warehouse, a seller of secondhand, surplus Coilcraft inductors. After discovery, Inductor Warehouse settled on the courthouse steps agreeing to a consent judgment. (trademark infringement)
Microchip Technology Inc. v. The Chamberlain Group, Inc. (Fed. Cir. 2006). Represented Chamberlain in a declaratory judgment action brought by Microchip Technology Inc. Microchip sought a declaration that it was licensed under Chamberlain's encrypted security code patents covering Chamberlain's remote-control garage door openers. Chamberlain moved to dismiss for lack of a justiciable controversy because Microchip and Chamberlain had previously settled an earlier litigation wherein Microchip received a covenant not to sue under Chamberlain's patents. After a period of discovery, the district court entered summary judgment in favor of Microchip, but Chamberlain successfully appealed and obtained reversal. The Court of Appeals for the Federal Circuit granted Chamberlain's request to have the entire action dismissed. On remand, the district court awarded over $185,000 in attorneys’ fees to Chamberlain. (declaratory judgment patent)


  • "Protecting Trade Secrets In the Workplace," American Intellectual Property Law Association, Minneapolis, Minn., May 19, 2016.
  • "The Impact of IPRs and CBMs on Patent Litigation," American Intellectual Property Law Association, Minneapolis, Minn., May 18, 2016.
  • "101 Post-Alice: How the USPTO and Practitioners Are Reacting," Intellectual Property Law Association of Chicago/U.S. Patent and Trademark Office program at Techweek Chicago, IIT Chicago-Kent College of Law, June 26, 2015.
  • "Intellectual Property as Business Asset: Where Is the Value and How Do You Find It?," Fitch Even Webinar, April 30, 2014.
  • Presentation to the Society of Hispanic Professional Engineers at Northwestern University in Evanston, Illinois, focusing on the practice of law, the role of lawyers in society, and our system of justice, on behalf of the Institute for Inclusion in the Legal Profession, November 2011 (with Joseph Shipley).
  • "How Far Do You Have to Look Under the Rock (to Find Invalidating Prior Art)?" AIPLA 2009 Annual Meeting, Washington, D.C., October 15, 2009.
  • Adjunct Professor, University of Illinois College of Law, Patent Defenses course
  • Lecturer, University of Michigan Law School, Advanced Patent Law Seminar
  • Lecturer, DePaul University College of Law, Advanced Copyright Seminar
  • Lecturer, John Marshall Center for Intellectual Property Law, Annual Intellectual Property Law Conference


  • "Value Added Litigation," in Business Power: Creating New Wealth from IP Assets. Ed. R. Shearer. (Hoboken, N.J.: Wiley, 2007).
  • American Bar Association
  • American Intellectual Property Law Association
    • Chair, Special Programs
  • Chicago Bar Association
  • Richard Linn American Inn of Court
  • Chicago Lincoln American Inn of Court
    • Past President and Program Chair
  • Illinois State Bar Association
  • National Knowledge and Intellectual Property Management Taskforce

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