Barry Irwin is a Member of the firm’s Intellectual Property Litigation practice and has been litigating mission-critical, high-profile intellectual property and technology matters in federal courts across the country for over 33 years.

Barry began his legal career in 1992 at a prestigious boutique intellectual property law firm in Chicago where he focused on intellectual property litigation. Three years later, he joined the Chicago office of the top AmLaw 100 law firm. There, he practiced intellectual property litigation for 18 years, the last 14 as a partner, and the last 10 as an equity partner. In 2014, Barry founded Irwin IP, which has grown to over 20 lawyers and is recognized as one of the best IP litigation boutiques in the country.

Barry has tried numerous competitor-versus-competitor matters for patentees and accused infringers before juries, judges and arbitrators. He has a track record of achieving successful results for clients, including 7 and 8 figure verdicts, complete defense verdicts where the patentees sought 9 figure damage awards, decisive summary judgment victories, attorney fee awards, numerous preliminary injunctions for plaintiffs and denials of preliminary injunctions for defendants.

Furthermore, Barry has been lead counsel in over a dozen Patent Office review proceedings. For example, he successfully petitioned the PTAB to institute an IPR on a patent touted as the foundation for a billion-dollar-per-year business despite that patent withstanding numerous other challenges brought by others, including prior Patent Office reviews and several federal court litigations.

Barry also often works with clients in strengthening their intellectual property portfolios to protect key products, including broadening existing intellectual property portfolios and securing rights to third-party intellectual property.

In addition to his active litigation practice, Barry has been an Adjunct Professor at Notre Dame Law School since 2012, where he teaches Patent Litigation, Introduction to Patent Law, and Advanced Copyright Law/Entertainment Law. He has also served as an expert witness in intellectual property-related matters. He is a former Board President of Lawyers for the Creative Arts, a former executive board member of the Linn Inn American Inn of Court, and former Vice Chair of the Burr Ridge Planning Commission.

Professional Accolades & Leadership Roles

Barry was named to the 2026 Best Lawyers in America List in four areas: Intellectual Property Litigation, Patent Litigation, Patent Law, and Trademark Law. He was also named to the 2025 Best Lawyers in America List in four areas: Copyright Law Litigation, Intellectual Property Litigation, Patent Law, and Trademark Law. In 2025, Barry was designated Lawyer of the Year by Best Lawyers in Copyright Law. He was also designated Lawyer of the Year in 2023 in two separate areas: Patent Litigation and Copyright Litigation. Each award is given to a single lawyer in a community.

In 2025 and 2018, Barry was selected by Thomson Reuters as one of the Top 100 attorneys in Illinois. Fewer than 10 IP attorneys received this recognition each year.

Barry was named Litigator of the Year by Managing IP in 2025, and Irwin IP LLP received Managing IP’s Impact Case of the Year award for LKQ Corp. v. GM Global Technology Operations, which Barry oversaw and managed. Barry has also been named an Intellectual Property Star and Trademark Star by Managing IP.

Barry has been recognized as a Super Lawyer and Leading Lawyer for over 20 years. He also received Martindale Hubbell’s highest ratings (AV, AV+, and AV Preeminent) in his first years of eligibility and each year thereafter.

In 2016, Chicago-based Lawyers for the Creative Arts, a not-for-profit organization that provides free and low-cost legal services to members of the various Illinois arts communities, awarded him with its Distinguished Service to the Arts award. He has been a supervising attorney for numerous pro bono matters involving a broad range of issues and hundreds of attorney hours annually,

including matters involving: the confinement conditions at a juvenile detention facility; employment discrimination; a trial of an aggravated assault charge resulting in acquittal; serving as guardian ad litem; and approximately 100 entertainment law matters.

In 2015, Barry received the rare distinction of being named a Fellow of the Litigation Counsel of America (LCA), and in 2022 became a Senior Fellow. LCA is an invitation-only honorary trial lawyer society composed of less than one-half of one percent of American lawyers. LCA Fellows are selected based on their legal excellence and accomplishments in litigation and superior ethical reputations.

For approximately 15 years, three times a year, Barry also taught trial advocacy to Kirkland & Ellis associates, participating in Kirkland’s multiday, immersive mock trial programs.

Representative Clients

Action Gaming, Activision TV, AGS, Alcon Laboratories, AMF Bowling, Aruze Gaming, Balance GFX, Covidien, CVS, Ecomed, F.P. Rosback, Fellowes, International Game Technology, Kapsch, LKQ, Massarelli Lawn Ornaments, Mark IV, Motorola, National Steel Car, Nobel Biocare, Oasis Financial, Office Depot, Opternative, Par-Kan, Peripheral Devices, Ranir, Shuffle Master, Smiths Medical, Swagway, Trading Technologies, U.S. Auto Parts, Visa, Walker Digital Table Systems, WorldGate Communications, Wowza Media Systems

Expert Witness Matters

• RTC Industries, Inc. Banner & Witcoff, et al., 2023 L 000809
• Action Gaming v. Director, Division of Taxation (N.J. Tax Ct. 2014)
• Lim J. v Bishop & Diehl, 2016 L 11626

Representative Matters

Barry is a first-chair litigation attorney handling high-stakes patent, copyright, trademark, trade secret, restrictive covenant, unfair competition, false advertising, and antitrust matters. Some of those matters include:

• assisting a casino gaming company in defending against patent infringement claims and securing denial of a TRO sought by dominant market participant that threatened client’s trade show participation;
• a monumental win for the client and overturning decades of precedent in design patent law: securing rare en banc review of a design patent infringement issue where ten judges concurred with client’s position, resulting in the previous panel opinion being vacated and the case being remanded for further proceedings consistent with the en banc panel’s ruling (LKQ Corp. v. GM Glob. Tech. Operations);
• the largest cases in recent ITC history wherein the ALJ was convinced to institute the first ever hundred-day proceeding on the domestic industry issue, two trials proceeded on 41 design patents with only five months allotted for discovery and the ITC Commission ultimately ruling in the client’s favor on the domestic industry issue;
• a multi-patent offensive matter for a mid-sized software company resulting in an eight-figure jury verdict after a three-week jury trial;
• a multi-patent defensive matter for a medical products company wherein Irwin IP defeated a Fortune 50 company’s effort to enjoin sales of its client’s medical product for allegedly infringing patents that had survived numerous prior invalidity challenges and that were the foundation for a $1 billion/year market;
• two related multi-patent, false advertising and unfair competition defenses for a disruptive start-up against an industry-leading Fortune 500 company, wherein Irwin IP won summary judgment on the patent claims, and the court announced its intention to also grant summary judgment on the non-patent claims;
• a patent matter for an industrial product supplier against its main competitor where Irwin IP prevailed on summary judgment and obtained an award of attorney fees;
• an offensive patent infringement action, winning a $7.3 million jury verdict, and obtaining a permanent injunction protecting a $100-million-per-year product line;
• a $500 million, multi-patent infringement defense, winning a complete defense jury verdict;
• an extensive, expedited evidentiary hearing, wherein Irwin IP obtained a TRO and a preliminary injunction precluding Customs and Border Protection (“CBP”) from imposing a
  bonding requirement against an importer that would have caused the importer to cease operations and cost hundreds of employees their jobs;
• an offensive matter against CBP wherein Irwin IP obtained a rare order requiring CBP to immediately move forward with seizure actions it had been intentionally delaying;
• four different offensive trade secret/restrictive covenant matters, obtaining preliminary injunctions after multi-day evidentiary hearings, including a case of first impression where the court precluded a former sales representative from soliciting “high-volume” customers;
• a trade secret defensive matter, obtaining summary judgment that 48 different allegedly misappropriated secrets were in the public domain, or not used by the client;
• an offensive trademark infringement matter, obtaining a preliminary injunction after an evidentiary hearing;
• an offensive trade dress infringement matter, obtaining summary judgment of trade dress infringement, and summary judgment on each of the defendants’ Walker-Process antitrust, unfair competition, interference with contract, and trade libel counterclaims;
•  an offensive breach of fiduciary duty action, obtaining over $16 million of settlements;
• numerous expedited intellectual property litigation matters for industry-leading gaming companies wherein preliminary injunctions and consent judgments were obtained involving a diverse range of technology, including automatic card shufflers, proprietary table games, table game monitoring systems, “virtual reel” technology, “method of play” patents, cashless technology, and authentication technology and progressive systems; and
• numerous successful offensive copyright infringement matters for recording artists, photographers, and sculptors wherein Irwin IP secured injunctions against the defendants’ unlawful distribution of infringing works and recovered its attorney fees.

Pro Bono Activities

Barry has been a supervising attorney for numerous pro bono matters involving a broad range of issues and hundreds of attorney hours annually, including matters involving: the confinement conditions at a juvenile detention facility; employment discrimination; a trial of an aggravated assault charge resulting in acquittal; serving as guardian ad litem; and in dozens of entertainment law matters.