Greg A. Castro

Greg Castro brings nearly four decades of litigation experience to his practice, focusing on complex commercial disputes, intellectual property, antitrust, and business torts. He has represented clients across the country in state and federal courts, handling matters involving patent infringement, insurance bad faith, products liability, and high-stakes business litigation.

Greg served as co-counsel in a landmark patent and antitrust case, Unitherm Food Sys., Inc. v. Swift Eckrich, Inc., where he secured a $20 million verdict for his clients. The decision, later upheld by the U.S. Supreme Court, established a critical procedural precedent in federal litigation.

Greg’s work is marked by a deep understanding of both legal nuance and business strategy, making him a trusted advocate for corporations, insurers, and intellectual property owners alike.

EDUCATION

• The University of Oklahoma College of Law (J.D., 1986)
• Oklahoma State University (B.S., 1983)

BAR ADMISSIONS

• Oklahoma (1986)
• U.S. District Courts for the Western, Northern, and Eastern Districts of Oklahoma
• U.S. Supreme Court
• U.S. Courts of Appeals for the 5th, 10th, and Federal Circuits

PROFESSIONAL MEMBERSHIPS

• American Bar Association
• Oklahoma Bar Association
• Oklahoma County Bar Association

AWARDS & HONORS

• The Best Lawyers in America – Intellectual Property Litigation (2019–2025), Trade Secrets Law (2021–2024), Commercial Litigation (2021–2025)
• Best Lawyers – Lawyer of the Year, Intellectual Property (2022)
• Super Lawyers
• AV Preeminent Rating – Martindale-Hubbell

REPRESENTATIVE MATTERS

Greg represents a wide range of businesses and IP firms in licensing, enforcement, and protection of their intellectual property rights. His litigation background includes patent, copyright, and trademark disputes, along with arbitration, mediation, and negotiation of complex business matters.

PUBLISHED CASES

• Unitherm Food Systems, Inc. v. Swift-Eckrich, Inc. – 546 U.S. 394, 126 S.Ct. 980