David J. Petersen

Daniel Larsen is a Shareholder in Buchalter’s Intellectual Property, Commercial Litigation, and Health Care Practice Groups. Within these practice areas, Mr. Larsen advocates and provides trusted advice to his clients for most varieties of business disputes. Whether as a litigator or advisor, he guides his clients towards creative, cost-effective solutions to achieve business goals while navigating risk by balancing the business interests and economic realities unique to each of his cli...

John’s practice is almost exclusively in the context of business and commercial disputes, with a particular emphasis on litigating limited liability company, shareholder, and partnership disputes, state and federal securities claims, construction contract and lien enforcement actions, and probate and trust matters in Oregon and Washington. He has tried dozens of cases to verdict and litigated hundreds of cases through arbitration, summary determination, or other successful adjudication.

Jon Bennett is an experienced real estate and business attorney who has maintained an active practice while serving as managing partner of Dunn Carney LLP since 2011. He has more than 30 years of experience at the firm, representing business and real estate clients on matters ranging from daily operations to significant transactions and disputes. He focuses on real estate agreements involving leases, acquisitions, design, development and construction, and has special expertise in the negotiat...

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...

Jason’s practice focuses on complex litigation, including the defense of product liability, toxic tort, environmental and commercial litigation claims. He has diverse trial court experience, having tried cases, mediated or argued dispositive motions in Oregon, Washington, Idaho and California courts. In additional to his trial practice, Jason has successfully mediated or arbitrated hundreds of other cases throughout the Pacific Northwest. Jason serves as national counsel for several pro...

Riley Lagesen is a top attorney recognized by Best Lawyers in the practice area(s) of Leisure and Hospitality Law. Riley, who practices law in Portland, Oregon, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Riley is held by other top lawyers in the same geographic and legal practice area.

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 ...

Steven has extensive experience in managing legal resources and coordinating criminal investigations, prosecutions, civil litigation and negotiations. His expertise in working with state and federal agencies, professionals in every field, expert witnesses, law enforcement and political officials assure his firm's comprehensive representation in complex, multi-faceted matters. Steven Ungar is co-chair of the Firm’s White Collar Criminal Defense, Regulatory Compliance and Special Investig...

John A. Berg is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. John A., who practices law in Portland, Oregon, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John A. is held by other top lawyers in the same geographic and legal practice area.

Jason M. Ayres is a top attorney recognized by Best Lawyers in the practice area(s) of Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law, Litigation - Banking and Finance and Litigation - Bankruptcy. Jason M., who practices law in Portland, Oregon, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jason M. is held by other top lawyers in the same geographic and legal practice area.