Your Partner In the Fight We Get Deals Done

Your needs are our priority. Our litigation attorneys have extensive experience serving clients in Oklahoma & Nationwide.

Business & Transactional Attorneys in Oklahoma City


Our goal is to create long-standing relationships with our clients so that we can provide them with the best possible service. If you are looking for a law firm that will take the time to truly understand your business and your goals, you’ve found your match at Calvert Law Firm.

Your Partners in Complex Litigation & Transactional Matters

At Calvert Law Firm, we take a comprehensive approach to our clients’ business goals and provide advice on virtually every aspect of their business operations. This includes helping with real estate issues, employment laws, and many other areas. 

We understand the Oklahoma and Texas business landscapes, and we are committed to providing our clients with reliable legal solutions. With over 30 years of experience, Calvert Law Firm is dedicated to helping businesses in Oklahoma and Texas address their transactional and litigation needs efficiently and cost-effectively.

We believe that it’s important to work closely with our clients to ensure a successful outcome for their business needs, which is why we offer a wide range of services including:

Contact our Oklahoma City lawyers today at (405) 444-8090. Your first consultation is free.

Why Choose Calvert Law Firm?

  • Since 1990, Calvert Law Firm has prioritized excellence in law, and we fight hard for our clients.
  • Our litigators work efficiently and thoroughly to make sure we meet your deadlines.

  • If another attorney is a better fit for your case, we'll tell you - and help you connect with other attorneys.

  • “Calvert Law Firm did a fantastic job representing me in my lawsuit! The staff at the office was incredibly professional as well as very pleasant & everyone made me feel at ease.” - Jacque L.

    We Handle Mergers and Acquisitions Nationwide 

    We understand that the purchase or sale of a business is a complex and often contentious process. Our experienced Oklahoma City M&A attorneys are here to help you navigate the process and protect your interests. We offer a full range of legal services to buyers and sellers of businesses of all sizes and across industries, including pre-acquisition planning, due diligence investigation, and transactional negotiation and documentation. 

    Experienced Litigation Attorneys Serving Oklahoma & Texas 

    Our experienced litigation attorneys are ready to take your case to trial. We believe that you will get the most money for your case if you are prepared to go to trial, and we have the proven results to back it up - over $100 million in verdicts. 

    We are one of only a handful of firms that have the experience necessary to handle complex business litigation. If you're looking for a law firm that can handle all aspects of your case, look no further than Calvert Law Firm.


    At Calvert Law Firm, we believe that every business deserves to have a reliable Oklahoma City law firm on their side. When you choose us to handle your legal matters, you can rest assured that you are in good hands. Our Oklahoma and Texas attorneys are here to provide comprehensive legal services tailored to meet the specific needs of your business. We can also help your business with:

    • Business Formation & Compliance
    • Commercial Leases
    • Insurance Disputes
    • Breach of Fiduciary Duty
    • Fraud  
    • Insurance Bad Faith


    Calvert Law Firm’s Oklahoma attorneys are well-versed in Oklahoma and Texas appellate court procedure and have a deep understanding of the complexities involved with appealing decisions. Our Oklahoma City lawyers work closely with clients to develop an effective strategy for appeal, from filing briefs to arguing cases before the court. We understand that appeals can be emotionally charged, and we take our responsibility seriously by providing comprehensive and compassionate representation throughout the process.

    At Calvert Law Firm, we prioritize providing reliable and cost-effective legal services to Oklahoma businesses and individuals.

    When you need experienced legal assistance for complex litigation and business transactions in Oklahoma City, contact Calvert Law Firm at (405) 444-8090. We offer a free initial consultation to clients in Oklahoma City, Tulsa, and Texas.

    We're Ready to Help

    Contact us today for sound advice regarding a full range of legal issues.

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