Nathaniel C. "Nat" Hunter

Attorney Shaw is Chairman of the Firm's Environmental Group, handling environmental litigation, compliance and permitting matters. He has been involved in several USEPA led investigations of Clients under the Clean Air Act and RCRA. Attorney Shaw also handles complex commercial litigation cases in the federal and state courts, ranging from claims of pesticide damage to crops to large breach of contract claims. Attorney Shaw's most unique experience involves heading a PRP group at a USEPA Supe...

Area of Emphasis Sean Keegan is senior counsel in the Litigation and Employment and Labor groups of Babst Calland. Mr. Keegan has a broad range of litigation experience in several practice areas including commercial, labor and employment, energy, and maritime. He has experience defending shareholder dispute claims, oil and gas lease disputes, insurance claims, and premises liability claims. Mr. Keegan has represented clients in both state and federal courts throughout the United States. Backg...

Douglas A. Williams is a top attorney recognized by Best Lawyers in the practice area(s) of Workers' Compensation Law - Claimants. Douglas A., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Douglas A. is held by other top lawyers in the same geographic and legal practice area.

Michael J. Sweeney is a top attorney recognized by Best Lawyers in the practice area(s) of Oil and Gas Law and Product Liability Litigation - Defendants. Michael J., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael J. is held by other top lawyers in the same geographic and legal practice area.

Christine T. Elzer is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Individuals and Litigation - Labor and Employment. Christine T., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christine T. is held by other top lawyers in the same geographic and legal practice area.

James B. Toohey is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. James B., who practices law in Erie, Pennsylvania, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which James B. is held by other top lawyers in the same geographic and legal practice area.

Gregory R. Unatin is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Gregory R., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Gregory R. is held by other top lawyers in the same geographic and legal practice area.

Ms. Patchen focuses on medical malpractice defense; contract negotiation and litigation, including litigation of non-compete contracts and representation before state licensing boards, and personal injury litigation. Ms. Patchen has represented specialty groups including: interventional cardiology, OB/GYN, plastic surgery, urology, radiology, interventional radiology, family practice, internal medicine, nephrology, physiatry, orthopedic surgery, ophthalmology, general surgery, cardiothoracic ...

Thomas is co-chair of the firm's Labor & Employment Department and concentrates his practice on representing management in many aspects of labor, employment, and employment-related litigation. Tom’s traditional labor practice includes representing employers during union organizing campaigns, collective bargaining, and grievance arbitrations. He has represented employers in litigation involving race, sex, sexual harassment, age and disability discrimination, and against claims allegi...

Area of Emphasis Don Bluedorn’s practice focuses primarily on water and wastewater management, site remediation/ brownfields, and hazardous and non-hazardous waste issues. Because of the technical nature of both the subject matter and his education, Mr. Bluedorn typically works closely with the client, technical consultants, and engineers during all phases of a project’s development. This team approach has been very successful with state and federal regulatory agencies in a number...