Sean D. O'Brien

Damien R. Hall is a lawyer recognized by Best Lawyers in the practice areas of Land Use and Zoning Law and Real Estate Law. Damien R. practices law in Portland, Oregon Best Lawyers has recognized Damien R. Hall since 2020. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Damien R. Hall is held by other lawyers.

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...

Chip Horner’s law practice focuses on defending medical negligence lawsuits, including high exposure birth trauma claims, ophthalmology, autism, failure to diagnose cancer, wrongful death and surgical matters. He is experienced in all aspects of health law. Chip’s clients range from large integrated health systems to solo practitioners, nurses, midwives, dentists, and many different allied health professionals. Chip also represents clients before licensing boards in Oregon and Was...

Jonathan Monson is a lawyer recognized by Best Lawyers in the practice areas of Appellate Practice, Commercial Litigation and Professional Malpractice Law - Defendants. Jonathan practices law in Portland, Oregon Best Lawyers has recognized Jonathan Monson since 2024. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Jonathan Monson is held by other lawyers.

Leslie A. Kocher-Moar is a Portland-based attorney who focuses on civil litigation involving bodily injury, property damage, insurance coverage, and appeals. She represents individuals and corporations in defense matters and advises insurers on a wide range of coverage issues. Leslie has extensive trial experience, having tried more than 50 cases, and regularly represents clients in state and federal courts in Oregon and Washington. Her practice includes litigation in the Oregon Circuit Court...

Jeff Hunter, a partner, focuses his practice on environmental and natural resources law, real estate and land use and environmental litigation, including white collar criminal matters. Jeff's practice includes environmental permitting and compliance, enforcement defense and civil and criminal litigation under various environmental statutes and regulations including CERCLA, hazardous waste, solid waste, water quality, water resources, air quality, regulated storage tanks, OSHA, and fertilizer ...

Dana L. Sullivan has represented individuals in employment and civil rights litigation for nearly 30 years. From 1995 until 1997, after completing a clerkship with the Honorable Malcolm F. Marsh, United States District Court Judge for the District of Oregon, Dana practiced with the Washington D.C., firm of Bernabei & Katz. While with Bernabei & Katz, Dana was involved in numerous high-profile employment discrimination suits that garnered national attention. She also served as a contra...

Collin McKean is a lawyer recognized by Best Lawyers in the practice areas of Business Organizations (including LLCs and Partnerships), Collaborative Law: Family Law, Family Law and Litigation - Labor and Employment. Collin practices law in Portland, Oregon Best Lawyers has recognized Collin McKean since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which...

Christopher Rich is a partner in the firm's Environment, Energy & Resources practice. He focuses on complex environmental cleanup compliance and litigation under CERCLA and state Superfund laws, resolution of state and federal governmental enforcement actions, and RCRA, Clean Water Act and Clean Air Act compliance and permitting.

Alan Galloway is a lawyer recognized by Best Lawyers in the practice area of Communications Law. Alan practices law in Portland, Oregon Best Lawyers has recognized Alan Galloway since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Alan Galloway is held by other lawyers.