Coffman and Seidenberger was established to serve the growing legal needs of clients in the greater Tulsa area and has now expanded to serving clients throughout the state of Oklahoma. With over ten years of experience, our seasoned attorneys are available to provide our clients with legal services covering a wide spectrum of complex practice areas. Regardless of the size of the case, the legal team at Coffman and Seidenberger works hard to meticulously prepare each case beforehand, and then we work even harder to achieve a favorable outcome for our clients.


We make client communication a top priority as we believe that clients have the right to know what is happening with their case at all times. This means that we are committed to returning client phone calls, speaking to new clients free of charge and even meeting with clients after hours as needed.

Our team is also committed to keeping legal costs in line with our clients’ expectations which is why we pride ourselves in utilizing ever-changing technology to meet our clients’ needs. We use the latest in billing technology to accurately track our legal time to the client’s benefit and we provide online access to virtual case files so case documents, as well as litigation costs, can be accessed day or night.


Both natives of Oklahoma, Coy Coffman and John Seidenberger are a formidable legal team bringing a wide variety of practice experience to each case. As two top-tier attorneys, Mr. Coffman and Mr. Seidenberger primarily focus on Probate, Estate Planning, and Debt Collection, but they also provide legal services for litigation, criminal defense, or personal injury.

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The knowledgeable attorneys at Coffman and Seidenberger are prepared to help you design an estate plan that meets your goals. We will work with you and your family to put together a plan that meets your unique circumstances, adding additional documents as necessary. Rest assured that you will receive personalized and professional service at every step in the process.