Giri Pathmanaban’s practice focuses on high-stakes patent, trade secret, and intellectual property contractual disputes.

He has successfully represented clients in federal district courts, the International Trade Commission (ITC), and Patent Office proceedings. Giri simplifies complex issues, communicates effectively with clients and juries, and advises clients on IP issues to help achieve their business objectives.

Giri’s technical background in computer science and engineering enables him to develop and execute winning legal strategies across a range of industries, inside and outside the courtroom. He has a proven ability to translate complex technical issues into themes and analogies that persuade judges and juries. He has litigated cases in a range of industries, including cybersecurity, AI and machine learning, semiconductors, computer networking and electronic devices, internet and cloud computing, and medical devices and healthcare.

Giri joined the firm as a partner in 2025 from another major international law firm.

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Notable Experience (including those prior to joining Cleary)

Cybersecurity

  • Lead counsel for GoSecure in a patent infringement case (WDTX) and trade secret misappropriation case against its competitor, CrowdStrike. Semiconductors.

  • Lead counsel for a cybersecurity startup in offensive cases involving cyber security patents against large cybersecurity companies.

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Internet Technologies

  • Lead counsel for Amazon in a seven-patent case in EDTX related to cloud computing technologies (Edge Networking v. Amazon).

  • Obtained a dismissal of all patent claims against Amazon.com in a dispute related to automated pricing technology.

  • Represented Amazon.com in a dispute related to automated pricing technology.

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Semiconductors

  • GlobalFoundries in securing a summary judgment of invalidity, marking a huge win in a case involving semiconductor design software.

  • TSMC in an ITC proceeding involving semiconductor fabrication technology. The case settled favorably on the eve of trial.

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Cloud Storage

  • Actifio in obtaining a highly favorable settlement in a patent and trade secret cases filed by its competitor, Delphix.

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Computing Networking and Electronic Devices

  • Amphenol in successfully arguing final hearings at the Patent Trial and Appeal Board (PTAB) that resulted in invalidating four patents asserted against the company.

  • A bank ATM maker against a competitor in the ITC.

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Wireless Technology

  • AX Wireless in obtaining successful settlements following highly favorable claim construction and venue rulings.

  • Overhead Door, serving as the day-to-day partner, in:

    • A four-patent case that Chamberlain brought in the Eastern District of Texas, ending in a jury verdict for Overhead Door (Chamberlain v. Overhead Door).
    • A five-patent ITC case related to garage door openers against Chamberlain, in which the ITC found three patents valid and infringed (Overhead Door v. Chamberlain).
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Medical Devices and Healthcare

  • Represented Abbott in several patent cases involving medical devices, including:

    • A worldwide war against its competitor, DexCom, related to continuous glucose monitoring devices. Cases settled favorably after favorable jury verdict and judgment of infringement.
    • A patent infringement lawsuit brought by competitor ISS relating to a wireless heart monitoring device called CardioMEMs, in which the team successfully filed inter partes review petitions (IPRs) and forced ISS to dismiss its case voluntarily.
    • A patent infringement lawsuit in the Central District of California in which Flexstent alleged that Abbott’s Xience stents, the bestselling drug-eluting stents on the market, infringed its patent; Abbott filed an IPR with the patent office seeking to invalidate the patent and the PTAB agreed.
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