David J. Petersen

Elizabeth C. Crouse is a top attorney recognized by Best Lawyers in the practice area(s) of Business Organizations (including LLCs and Partnerships), Energy Law and Tax Law. Elizabeth C., who practices law in Portland, Oregon, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elizabeth C. is held by other top lawyers in the same geographic and legal practice area.

Katherine VanZanten is an estate planning and tax attorney who has significant experience in estate planning, business and tax planning, charitable remainder trusts and establishing charitable organizations. Katherine has an active estate planning practice helping clients and their families complete their estate planning goals. She regularly advises fiduciaries on their duties with respect to trust and probate administration.

EXPERIENCED, STRATEGIC, RESPECTED, COMMITTED An experienced legal ethics practitioner and commercial and employment litigator, I focus my practice on the provision of legal and government ethics and risk management advice to lawyers, law firms, corporate in-house counsel, government attorneys, elected officials and political parties. I defend, advise, and serve as an expert on all aspects of the law governing lawyers and government officials including the defense of state bar and government e...

Derek D. Green is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Derek D., 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 Derek D. is held by other top lawyers in the same geographic and legal practice area.

Megan Ferris is a Portland-based attorney who focuses on civil litigation involving construction defect, wrongful death, personal injury, and product and premises liability claims. She represents clients in state and federal courts across Oregon and Washington, with a strong emphasis on insurance defense and construction-related disputes. Megan regularly represents insurers in both first-party and third-party matters and advises on insurance coverage and risk exposure, including claims involv...

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.

Heidi Mandt is a Portland, Oregon–based attorney who focuses on civil litigation involving product liability, professional liability, toxic torts, and insurance defense. She represents clients in state and federal courts in matters involving personal injury, commercial disputes, and insurance coverage. Heidi has tried more than twenty cases to verdict and has extensive courtroom experience handling claims involving product liability, medical and professional malpractice, and general lia...

Edward Piper is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Trade Secrets Law. Edward, who practices law in Lake Oswego, Oregon, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Edward is held by other top lawyers in the same geographic and legal practice area.

Mark A. Crabtree is the office managing principal and the litigation manager in the Portland, Oregon, office of Jackson Lewis P.C. Mark has more than 15 years of experience practicing labor and employment law. He litigates all types of employment law claims, including claims alleging sexual harassment, sex discrimination, disability discrimination, age discrimination, retaliation, breach of contract, and state tort issues in federal and state courts and in arbitration. Mark’s practice f...

Katherine McDowell is an attorney at McDowell Rackner Gibson PC in Portland, Oregon, where her practice centers on Energy Law and Energy Regulatory Law, with a significant focus on litigation involving regulatory enforcement matters. She advises utilities and energy companies on a broad range of regulatory and administrative law issues, including ratemaking, resource development and acquisition, compliance with environmental mandates, industry restructuring, and utility mergers and acquisitio...