Andy Oppenheimer

John K. Rottaris concentrates his practice in the areas of commercial and business litigation, creditors’ rights, commercial collections, landlord-tenant law, bankruptcy law and tax certiorari. He also represents manufacturers and manufacturers’ sales representatives in commission and contract disputes. John has represented clients in all phases of trial and appellate practice before local, state and federal courts, as well as alternative dispute resolution forums. He has extensiv...

Chanel T. McCarthy has more than ten years of experience assisting clients with their business needs - from lease agreements and contract negotiations to operations and employment matters. Chanel has a wide range of experience in corporate law including with issues related to the hospitality industry. Chanel brings a wealth of experience in the areas of trusts and estates, and other matters before the Surrogate’s Court.

William B. Collins is the owner of the firm. He has been practicing law since 1982, representing people for serious personal injuries throughout the United States. He is admitted to the State Bar of four separate states: New York, Florida, Michigan and West Virginia. His successful litigation in venues throughout the country attests to his ability to perform at the highest level anywhere and under any circumstances. He takes special interest in complex industrial and commercial negligence, in...

Anne Joynt is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs and Product Liability Litigation - Plaintiffs. Anne, who practices law in Buffalo, New York, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Anne is held by other top lawyers in the same geographic and legal practice area.

Diane M. Perri Roberts is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Corporate Law. Diane M., who practices law in Buffalo, New York, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Diane M. is held by other top lawyers in the same geographic and legal practice area.

Michael Stuermer represents individuals who have suffered personal injuries. He has a reputation for being a strong advocate for his clients and working diligently to recover damages that will assist in compensating for the injuries they have endured. Mr. Stuermer focuses his practice on all areas of personal injury law, including: Automobile Accidents Construction Accidents Motorcycle Accidents Premises Liability Workplace Accidents He is a senior partner in Lipsitz Green Scime Cambria&rsquo...

Ms. Berkman concentrates her practice in the areas of estate planning, estate and trust administration, Medicaid advisement and planning, accountings, kinship matters, wrongful death compromises and guardianship proceedings. She assists clients with preparation of estate plan documents, including wills, trusts, powers of attorney, health care forms and living wills.

Joseph J. Gumkowski practices in the areas of general business law, e-commerce, taxation, and intellectual property. His practice is concentrated in servicing select clients of the firm in the entertainment business. Mr. Gumkowski is an active member of the Sports Car Club of America; the Sports Car Club of America, Western New York Region; the South Towns Motor Club; and the Central New York Ice Racing Association. Mr. Gumkowski earned second place in the 2002 New York State Road Racing Cham...

Jeff joined this firm in 1993 and became a partner in 1994. He is a lifelong resident of the Olean area and an Olean High School Graduate. Mr. Black obtained his Bachelor of Science Degree from St. Bonaventure University in 1990 and graduated cum laude from The Dickinson School of Law (Penn State) in 1993. While in law school he was a member of the Dickinson Law Review and his case note was published. He was also a member of the Woolsack Honor Society. Upon graduation from law school, Mr. Bla...

Michael Schiavone has provided legal guidance to businesses for 30 years. He concentrates his practice in the areas of business law, commercial real estate, and estate planning. Mr. Schiavone is experienced in regularly counseling clients in a wide array of legal matters, including: Commercial lending and financial transactions Mergers and acquisitions Corporate, partnership, and limited liability matters Business formation Business succession planning Contract negotiation and dispute resolut...