Christopher Hamilton

Charley joined the firm in 1985. His practice focuses on representation of closely held businesses in a wide variety of business transactions, including significant work in real estate ownership, development and construction. Specialized areas include business start-up, shareholder and employment agreements and representing clients in the sale or transition of their businesses. In addition to his transaction work, he represents clients in complex business litigation.

Approximately 50% of Kevin's Intellectual Property Law practice is devoted to preparing and prosecuting patent applications in the area of computers related to hardware, software and image processing; the remainder of his practice is devoted to client counseling , licensing , litigation and related matters. His focus includes patents , trademarks , copyrights and trade secrets . His representative clients include Planar Systems, LLC, Sharp Laboratories of America, Inc., Kam Industries, Exit E...

Collin McKean is a top attorney recognized by Best Lawyers in the practice area(s) of Business Organizations (including LLCs and Partnerships), Collaborative Law: Family Law, Family Law and Litigation - Labor and Employment. Collin, who practices law in Portland, Oregon, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Collin is held by other top lawyers in the same geographic and legal practice area.

Julie is a trial attorney specializing in business and real estate disputes, banking litigation, and insurance coverage disputes. She enjoys a reputation among her colleagues for success in the court room. She has long held an AV peer rating with Martindale-Hubbell. Since 2007 she has been named by her peers to the top five percent of all business litigation attorneys in the State of Oregon in the annual publication of Super Lawyers. She has also been selected by her peers for inclusion in Th...

Michael Wiswall is a native Oregonian. He began his legal career at Hart Wagner LLP in 1994, and became a partner of the firm in 1999. For nearly 20 years, Mike’s practice has primarily focused on defending medical malpractice lawsuits throughout the Northwest. Mike also assists hospitals and clinics with pre-litigation evaluations, as well as with their early disclosure and resolution programs. Mike frequently represents physicians, dentists, pharmacists and nurses before state licensi...

Troy Nixon is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Troy, who practices law in Portland, Oregon, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Troy is held by other top lawyers in the same geographic and legal practice area.

Yoona Park strives to embody the spirit of ”nunchi” (눈치), a Korean concept that recognizes the importance of reading the moods, tone, and goals of individuals within a group, and adjusting one’s actions to meet those group dynamics. Yoona is motivated by this interpersonal aspect of her collaborative efforts in the legal profession—including those with co-counsel, Keller Rohrback colleagues, and clients. Her leadership ability and passion for both teamwork and advocacy...

Kevin Mapes is a commercial litigator with more than 25 years of experience in state and federal courts in Oregon, Washington, and California. He represents plaintiffs and defendants in a wide variety of business disputes involving commercial lending, partnership disputes, general contract matters, construction disputes, and a wide variety of commercial real estate disputes. Mr. Mapes is also an experienced environmental litigator, and has represented clients in matters involving the federal ...

Joshua P. Stump has been practicing law since 1997 and focuses his practice on matters involving complex business litigation, with a particular emphasis on business/contract, employment and product liability litigation. Josh also has experience in intellectual property, asbestos and other mass tort litigation, administrative law, municipal, civil rights and appeals. For full biography, visit: harrang.com

John H. Chambers is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law and Litigation - Real Estate. John H., who practices law in Portland, Oregon, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John H. is held by other top lawyers in the same geographic and legal practice area.