Steven Irwin

Area of Emphasis Frank Clements is a founding shareholder of Babst Calland. Mr. Clements is experienced in a variety of corporate, finance and commercial transactions. He has a strong background in energy and environmental law. His practice is focused on business transaction work, particularly the acquisition and disposition of businesses and the formation of joint ventures, predominately in the industrial sector. In addition to his M&A practice, Mr. Clements has structured and negotiated...

Attorney Brad Mellor joined Bowles Rice in June 2018, bringing 30 years of experience to the firm’s Construction Law Team. He is admitted to practice in Pennsylvania and Ohio, and works from the firm’s Southpointe, Pennsylvania office. His wide range of experience in the construction industry includes contract preparation and negotiation, contract enforcement through litigation or arbitration and dispute avoidance and resolution. Brad advises clients through every phase of a const...

John T. Vogel is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. John T., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John T. is held by other top lawyers in the same geographic and legal practice area.

Adam J. Warhola is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Adam J., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Adam J. is held by other top lawyers in the same geographic and legal practice area.

Area of Emphasis Jean Mosites is of counsel in the Environmental, Energy and Natural Resources, and the Public Sector groups of Babst Calland. She is past co-chair of the Environmental Group. Her practice includes client counseling on environmental compliance in the energy sector, resolving liabilities under federal and state remediation programs, as well as administrative appeals and environmental litigation in state and federal courts. Ms. Mosites represents clients in the Pennsylvania Comm...

Mr. O’Connor has been a member of the firm for 20 years. His practice is devoted to the representation of physicians and hospitals in medical malpractice cases. Brian also represents health care providers in litigation before the Pennsylvania State Board of Medicine. Mr. O’Connor has tried over 45 jury trials on behalf of physicians and hospitals throughout the counties of Western Pennsylvania and the Federal District Court in Pittsburgh and Erie. Mr. O’Connor has participat...

Area of Emphasis Harley Stone is of counsel in Babst Calland’s Public Sector and Energy and Natural Resources groups. He provides a wide range of services to municipal governments, authorities, and private developers, with an emphasis on municipal permitting, planning, land use, and zoning. A seasoned trial lawyer, Mr. Stone has many years of experience as a litigator in the areas of municipal law, employment law, eminent domain, and tax assessment appeals. Mr. Stone has represented pub...

Area of Emphasis Mark Dausch is a shareholder and past co-chair of the Litigation Group of Babst Calland. He is an experienced trial lawyer who concentrates his practice on energy and environmental litigation. As lead trial counsel, Mr. Dausch has tried several high-stakes lawsuits in federal, state and administrative courts, as well as before arbitration panels. His trial work includes successfully representing businesses in multiple complex energy and environmental trials involving claims i...

With a focus on business law, Dave regularly represents real estate developers, small and closely held service providers, manufacturers, professional services, lenders, and public companies. Among the many business related matters he assists with include: Negotiation and documentation Organizational governance Structuring developmental or joint venture projects Mergers and acquisitions Restructuring Project finance Extension of credit facilities Raising debt and equity Administrative and regu...

Area of Emphasis Michael Winek is a member of the Environmental and Energy and Natural Resources groups of Babst Calland. Mr. Winek has extensive experience in a wide range of environmental regulatory programs, with an emphasis on regulatory issues arising under the Clean Air Act. Mr. Winek devotes a substantial amount of time advising clients on complex air permitting issues (such as PSD, NSR and state construction permits) for plant expansions and projects. In addition to new source permitt...