Mark R. Leslie

Mariah L. Passarelli is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management and Litigation - Labor and Employment. Mariah L., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mariah L. is held by other top lawyers in the same geographic and legal practice area.

Margaret K. Sitko is a top attorney recognized by Best Lawyers in the practice area(s) of Real Estate Law. Margaret K., 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 Margaret K. is held by other top lawyers in the same geographic and legal practice area.

Jocelyn P. Kramer is a top attorney recognized by Best Lawyers in the practice area(s) of Education Law. Jocelyn P., 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 Jocelyn P. is held by other top lawyers in the same geographic and legal practice area.

Michael D. Glass is a top attorney recognized by Best Lawyers in the practice area(s) of Labor Law - Management. Michael D., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael D. is held by other top lawyers in the same geographic and legal practice area.

Area of Emphasis John McCreary is of counsel in the Employment and Labor Services and Public Sector Services groups of Babst Calland. Mr. McCreary’s practice is concentrated in labor and employment law, with emphasis on negotiation and enforcement of collective bargaining agreements, ERISA pension and benefit litigation, employment discrimination, relationships with a unionized workforce and defense of OSHA citations under the General Industry and Construction standards. Mr. McCreary&rs...

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...

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 ...

Sheri L. Giger is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Sheri L., who practices law in Pittsburgh, Pennsylvania, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sheri L. is held by other top lawyers in the same geographic and legal practice area.

Across Pennsylvania, Brian Vertz is viewed as a powerful advocate for his family law clients. For more than 25 years, Brian has zealously represented clients in complex child support cases, high net worth divorces, prenup enforcement cases, difficult custody disputes, and appeals up to the Pennsylvania Supreme Court. With his MBA background and financial training, Brian develops effective strategies for family law cases involving business valuation, executive compensation, double dipping, fam...

A business litigator and environmental lawyer, Anthony has represented business clients in significant cases presenting issues involving unfair competition, corporate governance, Sherman and Clayton Act violations, breach of fiduciary duty, fraudulent conveyance, securities fraud, trademark protection, insurance coverage, construction litigation, legal malpractice, commercial real estate, and contract matters. He also has acted as outside general counsel to a publicly-held real estate develop...