Put one of Oregon’s most experienced personal injury law firms to work for you.

Dwyer Williams Cherkoss Attorneys, PC is a statewide accident or injury law firm dedicated to preserving the rights of injured people in Oregon. With over seven decades of combined experience, we are dedicated to maintaining a hands-on approach with our clients. At Dwyer Williams Cherkoss Attorneys, PC, you are a person, not a number.

“No Win No Fee”

We work on a contingent basis, rather than on an hourly basis.  This means that if we do not recover money to compensate you for your injuries, you don’t have to pay us a dime in attorney fees!

Top reasons to have the law firm of Dwyer Williams Cherkoss, PC help you with your accident or injury case:

We Get Results

We settle a vast majority of our personal injury cases without a need for trial. Our attorneys pride themselves on their ability to get top dollar in settlement. If we can’t get the results you desire in settlement, we will take your claim to court.

Solid Experience

Our law firm has over 7 decades of collective experience in personal injury law. Roy Dwyer has won numerous trials across the state over his career. He is an active member of the prestigious American Board of Trial Advocates, where he works to foster improvement in the ethical and technical standards of trial practice. Obtaining a membership in ABOTA is no easy task, as it requires the utmost professionalism and skill.

Tim Williams is the lead trial attorney in the firm, and takes more cases to trial each year than most other personal injury attorneys in the state. He serves on numerous Oregon State Bar committees, serves on the Oregon State Bar House of Delegates, and is on the Board of Governors for the Oregon Trial Lawyers Association. He is also an author, writing on legal topics for both the Oregon State Bar as well as the Oregon Trial Lawyers Association. Moreover, he lectures on trial techniques to attorneys across the state.

Arne Cherkoss worked at a prestigious defense firm for four years before joining our law firm. He uses this unique perspective to hone in on problematic issues in a case, and uses his experience to find a solution. He has a proven track record for settling tough cases for top dollar. If he can’t get a case settled, he is not afraid to take it to trial. He is also an author for the Oregon State Bar on legal topics.


We don’t believe in practicing areas of law in which we aren’t 100% competent. Our attorneys and skilled legal assistants are experts in personal injury law, including car accidents, car crashes involving drunk driving, brain injury, neck and back injuries, dog bites, wrongful death, product liability, and much more. We continuously keep up-to-date with seminars, conferences, and in-house training.

Team Approach

Our attorneys consult with each other on a daily basis. When it’s time to settle, the attorneys meet to evaluate your case. Our attorneys will then meet with you to discuss your case and make decisions on how to proceed.

Tough Negotiators

We know your rights and how to fight for them. We draw on our extensive experience with settlement strategy, and refuse to be bullied by big insurance companies. If we can’t obtain a reasonable settlement, we will take your case to court.

Courtroom Veterans

Most personal injury attorneys claim to be trial lawyers, without the experience to back it up. We are different. Roy Dwyer has over 45 years of trial experience, including representing clients in the Oregon Court of Appeals and the Oregon Supreme Court. Tim Williams takes more cases to trial per year than most other personal injury attorneys in the state. Richard Potter and Arne Cherkoss are both strong negotiators, and have tried numerous accident or injury cases to a jury. Simply put, our attorneys are not afraid of going to trial when necessary. This commitment to our clients makes a fair settlement much more likely.


We take the time to listen, and try to respond quickly to your concerns. We encourage a dialogue between our law firm and our clients. Our attorneys and staff have an open door policy, making ourselves available to meet with our clients whenever they request. Working with you as you recover from your injuries, we develop your legal case to its best potential and obtain fair compensation for your claim.

As a Dwyer Williams Cherkoss client, you can expect prompt, competent, and friendly legal representation.

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