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Experienced and Successful Seattle DUI Lawyers

Cowan Kirk Kattenhorn is a professional law firm with William Kirk and Christopher Kattenhorn as its expert DUI & BUI(Boating Under the Influence)  lawyers in Seattle, Washington. We have decades of experience in successfully representing individuals charged with DUI charges and other criminal offenses in Seattle. Cowan Kirk Kattenhorn has represented clients in the municipal courts of Kirkland, Bellevue, Redmond, Woodinville, Mercer Island and other Puget Sound court districts.

Kirk and Kattenhorn, the main practicing attorneys, bring years of expertise in criminal law to you. We  form the premier pair of one of the most successful and passionate lawyers in Washington. Our approach is thorough, skilled and completely professional.  We offer a dedicated service that is based on trust, understanding and transparency with each one of our clients.

Years of Aggressive DUI Defense in Seattle

We specialize at representing and defending individuals charged with serious, as well as minor, criminal offenses, primarily DUI and BUI charges.  Cowan Kirk Kattenhorn has been successfully defending individuals with the charges since 1969. We work closely with our clients, preparing arguments and fighting for their rights day in and day out at the courtroom trials.

Aggressive Seattle DUI Attorney Defense

We understand that being arrested or detained by the police can be very emotional and intimidating for anyone. If you are an individual charged with impaired driving Cowan Kirk Kattenhorn is the firm that will aggressively defend you from the initial engagement.

Whether you are in Seattle, Kirkland, Bellevue or King County, you need to have complete knowledge and understanding of your rights. If you are accused of driving impairment, you need the timely and appropriate intervention of an expert criminal defense lawyer. You will need to know exactly what to say and what not if you are arrested for driving under the influence of alcohol.

Cowan Kirk Kattenhorn offers the best legal assistance and courtroom representation throughout the legal proceedings to save you the hassle and to dismiss or reduce your penalty to the best extent.

Call 1-866-822-1230 today to reap benefits of our 75 years of combined experience for your DUI or BUI case.

Thorough DUI & BUI Legal Defense from Start to Finish

At Cowan Kirk Kattenhorn we are passionate about our work. We are dedicated towards offering thoroughly professional DUI litigation in the most difficult and complex cases. We are skilled courtroom lawyers and offer all levels of representation; from the start to the finish of your case including the courtroom trials, appearances and documentation. We have the most experienced DUI attorneys along with the most successful DUI experts who specialize in assisting you in the following areas:

  • Defend DUI Charges
  • Protect Your Driver's License
  • Get an Occupational Driver's License or Ignition Interlock License
  • Handle Pretrial DUI Litigation
  • Take on the DataMaster and Draeger Breath Test
  • Marijuana DUI

Authors for Defending DUIs in Washington

In addition to actively practicing DUI litigation in the greater Seattle area, the attorneys of Cowan Kirk Kattenhorn are also proud to contribute to the practice of DUI law nationwide. We literally wrote the book on how to defend DUIs in this state: Defending DUIs in Washington (Lexis/Nexis Publishing), a textbook for other lawyers who defend these complicated cases. The book is co-authored by Mr. Cowan and Mr. Kirk along with two other contributing authors.    

Areas We Serve for DUI Cases

Need an Experienced and Dedicated DUI Lawyer in Seattle?

We are a client-centric law firm that is based on building trust and vigorously defends our clients at all criminal courts.

Whether you are booked for DUI or  BUI in Seattle, Bellevue, King, Pierce or Snohomish Counties, contact our DUI defense attorney today.

You are just a phone call or an email away from receiving legal assistance and getting in touch with an experienced criminal defense lawyer that defends your rights, reputation and protects your interests in the courtroom and outside.

Call us now to schedule a free initial consultation.

For an expert DUI Defense Attorney, call 425-822-1220 or 1-866-822-1230 now!

Cowan Kirk Kattenhorn


Cowan Kirk Kattenhorn is known throughout Washington and the nation for representing all of its clients with commitment, creativity and compassion. We recognize how devastating a DUI charge can be, particularly when our clients learn how incredibly tough Washington's DUI laws have become, even for a first-time offender.

Contact Us

If you need a DUI defense attorney in Seattle, Bellevue, or King County, contact us today to find out why respect for our clients, a passion for justice, and our commitment to winning have earned each of us the highest honor a member of the bar can receive from our colleagues – their referrals.