John W. Hempelmann

Complex marital dissolutions and legal separations, parenting plans, relocation actions, high-conflict child custody and child support matters, third-party and non-parental custody actions, cohabitation/prenuptial and community property status agreements, and post-dissolution issues, including child support and parenting plan modifications.

Eric A. Lindberg is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Patent. Eric A., who practices law in Seattle, Washington, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Eric A. is held by other top lawyers in the same geographic and legal practice area.

Erin Riley knows that strong relationships are the key to complex cases.As a partner in Keller Rohrback’s Complex Litigation Group, Erin has allowed these collaborative and long-lasting relationships to inform her work for over 20 years. Since 2001, Erin’s practice has focused on representing employees and retirees in Employee Retirement Income Security Act (“ERISA”) actions involving defined contribution, defined benefit, and health benefit plans. Erin has worked on n...

Mallory Allen is a devoted legal advocate for physically and emotionally injured people. She is a uniquely talented strategist, effective negotiator, and savvy trial lawyer. She has tried numerous cases to verdict in both state and federal courts, logging several seven- and eight-figure awards for her clients—victims of medical malpractice, dental malpractice, sex abuse, and other personal injuries. Mallory prioritizes and takes pride in putting clients at ease throughout the legal proc...

P. Arley Harrel is a Member in the Seattle office of Williams Kastner, where his practice concentrates on civil litigation, trust and estate litigation, and trial-related real estate and commercial matters across Washington and Oregon. Harrel’s litigation work spans a wide range of areas, including antitrust, banking, class actions, commercial disputes, condemnation/eminent domain, construction, employment, environmental law, franchise law, intellectual property, municipal liability, pe...

Sabrina began her career as a family law practitioner 20 years ago when she joined Ken Brewe’s law firm as an intern, and then as a newly-minted associate, making partner after just five years. Since that time, Sabrina has represented clients in a full range of “cradle to grave” family law matters, particularly complex and high net-worth divorce cases, including property and business valuation, property division, spousal maintenance, parenting plans and custody arrangements....

John Denkenberger is the managing member of COJK, a member of the firm's executive committee, and chair of the litigation practice group. John has successfully litigated patent, trademark, trade secret, and unfair business competition issues in federal and state courts. He has also successfully litigated AIA post-grant challenges, including inter partes review, before the Patent Trial and Appeal Board. In addition to his litigation practice, John also advises clients on foreign and domestic p...

Scott Adams is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property and Patent Law. Scott, who practices law in Seattle, Washington, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Scott is held by other top lawyers in the same geographic and legal practice area.

Daniel L. Thieme is experienced in all areas of employment relations law. He has particular expertise in the areas of wage and hour law, executive and employee compensation, business sales and restructuring, employee intellectual property issues, employment agreements and policies, and discrimination law. With respect to wage and hour and compensation law, Dan’s experience includes: Wage and hour class action defense Overtime and minimum wage compliance Executive compensation, including...

Otto has been involved in all aspects of employer representation in labor and employment law for over thirty years. He works with employers of all sizes, helping them understand their legal rights and responsibilities. Otto regularly takes the lead in bargaining negotiations for many public and private sector clients, and has represented numerous employers in both grievance and interest arbitration. Otto has also worked extensively on executive compensation matters, representing both executiv...