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Effective. Efficient. Legal Counsel ... Evolved

You and your business are dynamic and adaptable. You’re expected to provide constantly improved products and services and to respond to continually changing market conditions.

Shouldn’t your legal counsel do the same?

Mangum Ririe provides the highly evolved form of legal counsel you’ve always wanted. To us, you’re not just a client. You’re our partner. We strive to be part of your integrated legal team—a partnered member of the legal infrastructure every entrepreneur and business needs to succeed.

As we have done for small businesses and Fortune 500 companies alike, we’re here to solve your legal problems and defend your legal rights with insight, skill, judgment, and diligence. Let us partner with you and show you our evolved form of highly professional, yet personalized, legal counsel.


Our Story

We offer legal services built on a foundation of nearly 25 years of “Big Law” experience.

Mangum Ririe started in 2019 with the simple proposition that everyone deserves top-notch legal representation. The sort of representation honed by years representing some of the largest, most sophisticated business organizations on the planet in disputes of the highest stakes.

Our experience litigating and counseling in one of the most complicated areas of US law—intellectual property rights, including patents, trade secrets, trademarks, and copyrights—positions us to tackle whatever legal issues you need resolved, of any complexity. Add to that our significant experience litigating consumer protection class action, contract enforcement, defamation, and other general business disputes, and you have the perfect foundation for your integrated legal team.


Experience

General Business Litigation and Counseling
Strategy Development
Intellectual Property
  • Patent
  • Copyright
  • Trademark
  • Trade Secret
  • Name, Image, and Likeness
  • First Amendment and Defamation
    Consumer Protection
    Product Liability
    Licensing
    Contract Enforcement

    Industries

    Aerospace
    Automotive
    Clean Energy
    Computers & Technology
    Home Furnishings
    Industrial Processes
    Medical Devices
    Microchip Fabrication & Design
    Mobile Telephony
    Startups
    Streaming Services
    Telecommunications
    Wearables

    Attorneys

    Photo of Rustin Mangum
    Rustin Mangum
    Partner
    Photo of Spencer Ririe
    Spencer Ririe
    Partner

    Services

    Litigation. Counseling. Federal courts, state courts, and the Patent Trial and Appeal Board. From handling entire lawsuits to discrete responsibilities like managing document reviews and acting as local counsel or serving or responding to a subpoena, we can help you. And if we can’t, we’ll be sure to put you in good hands with one of our network of like-minded professionals.


    Contact Us

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    Do you have a legal question to discuss or would you like a consultation? Please contact us by phone or email. We would be grateful to speak with you.

    Our Location

    We are located in South Orange County, California.

    Our address:
    999 Corporate Dr., Suite 255
    Ladera Ranch, CA 92694

    Phone: 949.699.2499

    Rustin Mangum
    rustin@mangumririe.com

    Spencer Ririe
    spencer@mangumririe.com

    While we look forward to your communication, merely communicating with us does not constitute an attorney-client relationship between you and Mangum Ririe. Please do not send confidential information to us prior to establishing an engagement agreement with one of our attorneys.