Attorneys
JOHN SEIDENBERGER
About
Mr. Seidenberger was initially raised in Collinsville, OK, and later raised in Vinita, OK, where he graduated high school. He currently lives in Broken Arrow with his loving wife and their beloved pets.
Mr. Seidenberger is an avid outdoor enthusiast and enjoys fly fishing, hiking, hunting, and spending time outdoors with his ornery Labrador Retriever. His favorite annual retreat is the mountains of Colorado in the summer and fall.
Education
Mr. Seidenberger received a Bachelor of Science in Criminal Justice, with a minor in English, in 2007 from Northeastern State University in Tahlequah, Oklahoma. Mr. Seidenberger graduated from the University of Oklahoma College of Law in 2011.
Experience
Mr. Seidenberger gained a wealth of experience after graduating from law school by working at a well-established and trusted law firm in Northeast Oklahoma for nearly four years. While there, he served a wide array of clients in a multitude of complex practice areas such as banking law, hospital law, foreclosures, Fair Debt Collection Practices Act compliant collection litigation, personal injury, adoptions, probate, and estate administrations, and business transactions. Mr. Seidenberger later joined the Tulsa County Public Defender’s Office where he dedicated his time and energy in representing indigents accused of criminal offenses and where he gained invaluable criminal law and trial experience.
Coffman & Seidenberger was then founded in order to serve the growing legal needs of the legal community needing high-level representation.
View Memberships & Awards
Memberships and Awards
Mr. Seidenberger was licensed by the State Bar of Oklahoma in 2011 and the State Bar of Washington in 2015.
He is also licensed to practice in the United States District Courts for the Northern, Western, and Eastern Districts of Oklahoma and the United States Bankruptcy Courts for the Northern, Western, and Eastern Districts of Oklahoma.
Mr. Seidenberger was selected to the Oklahoma Rising Stars List (top 2.5% of lawyers over 40) by Super Lawyers for the years 2018, 2019, and 2020. He was also selected to the America’s Top 100 High Stakes Litigators for 2019.
Attorney
COY COFFMAN
About
Mr. Coffman was born and raised in Bixby, Oklahoma. After attending law school at Oklahoma City University, he moved to Tulsa, Oklahoma where he began working for a small firm that later established Crockett & Coffman. There he primarily practiced estate planning, probates, and business law. Mr. Coffman established Coffman & Seidenberger to expand his practice into other areas of law in order to serve the growing legal needs of the greater Tulsa area. During his free time, Mr. Coffman likes to golf, fish, hunt, watch sports, and spend quality time with his wife, son, and daughter.
Education
Mr. Coffman received a Bachelor of Science in Criminal Justice, with honors, in 2007 from Northeastern State University in Tahlequah, Oklahoma. Mr. Coffman then graduated from Oklahoma City University College of Law in 2010.
Experience
Since 2010, Mr. Coffman has primarily practiced estate planning, will/trusts, probates/administration, civil litigation, business entities, business disputes, transactions, and collections. However, from this client base, Mr. Coffman has navigated a wide array of legal issues in general practice.
View Memberships, Awards, & Community Service
Awards
Cali Award of Excellence -Trial Practice; Oklahoma City University College of Law
Memberships
Mr. Coffman was licensed by the State Bar of Oklahoma in 2010. He is also licensed to practice in the United States District Court for the Eastern, Western and Northern District of Oklahoma. Mr. Coffman is an active member of the Tulsa County Bar Association.
Community Service
Legal Aid Services of Oklahoma
Office Manager / Legal Assistant
ADRI FERGUSON
About
Ms. Ferguson lived in Wood River, IL, until 2019 when she moved to Tulsa, OK, to take advantage of the city’s growing economic opportunities. In 2021, she graduated Magna Cum Laude from American Public University with a Bachelor of Arts in International Relations with a concentration in Eastern Asia. One of her most proud achievements is being awarded the Good Citizens Award from the Daughters of the American Revolution in 2016. In her spare time, Ms. Ferguson enjoys learning about other cultures, gardening, cuddling with her kitties, and spending time with her family.