LAWYERS
Meet the lawyers behind Ballon Stoll P.C.
Our attorneys bring expertise and knowledge to a diverse range of legal practice areas.
With a commitment to excellence and ethics, we provide unparalleled legal representation and work tirelessly to ensure the best possible outcomes for our clients.
Managing Partner
Vano Haroutunian is the firm’s Managing Partner. His practice includes matters in Immigration, Commercial, Corporate and Tax Law, as well as Family Law and Litigation. Prior to joining Ballon Stoll as a member, he was with PricewaterhouseCoopers' Tax and Legal Services Department, where he worked on Federal, State and International Tax matters for Fortune 500 Clients of the firm. Vano's prior experience included work in appellate litigation at Stern, Greenberg and Kilcullen, as well as Securities Law at the SEC's New York Enforcement Division. His clients include multinational businesses, especially companies in the fashion industry.
Mr. Haroutunian is fluent in five languages and is admitted to practice law in the states of New York and New Jersey as well as in the United States Supreme Court and in the Courts of Appeal for the Second, Third and Ninth Circuits.
EDUCATION
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Seton Hall University School of Law (J.D.); Member of Constitutional Law Journal; Graduated Cum Laude
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New York University School of Law (LLM in Taxation)
PRACTICE AREAS
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Immigration
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Commercial Transaction
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Commercial Litigation
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Corporate
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Matrimonial
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Tax Planning
MARSHALL B. BELLOVIN
Partner
Marshall B. Bellovin became a member at Ballon Stoll in 1994 after heading his own law firm. Mr. Bellovin heads the firm’s Litigation Department and Labor and Employment Practice Group, and serves as Ballon Stoll’s Chief Operating Officer.
Mr. Bellovin actively practices before federal and state appellate and trial courts, various governmental agencies and departments, and arbitration and mediation tribunals. His cases have been reported in federal and state reporters, and have been the subject of numerous newspaper and magazine articles. His practice encompasses all phases of litigation and trial practice, Alternative Dispute Resolution and negotiation, and includes employer-employee relations, insurance defense, employment discrimination litigation and agency filings, FMLA and FLSA matters, employee separations and benefits, and commercial litigation. Mr. Bellovin has been an Adjunct Professor of Law at the Benjamin N. Cardozo School of Law since 1998. He is a member of the National Employment Lawyers Association (NELA), and has been selected as a Metro New York SuperLawyer, 2015-2023, and an AVVO Top-rated Lawyer, 2019-2023.
EDUCATION
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University of North Carolina at Chapel Hill (B.A.)
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New York University (M.A.)
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New York Law School (J.D.); Member of Moot Court Team
PRACTICE AREAS
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Labor and Employment
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Insurance Defense
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Commercial Litigation
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Arbitration
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Civil Rights
MARK B. STILLMAN
Partner
Mark Stillman joined Ballon Stoll’s Real Estate, Corporate and Securities and Commercial Finance Department in 2013 and currently is the chair of the department. Prior to Ballon Stoll, Mr. Stillman was associated with several large, national (and international) law firms, including Epstein Becker & Green, P.C., Phillips Lytle LLP and Cadwalader, Wickersham & Taft LLP.
Mr. Stillman’s practice involves representing buyers, sellers, developers, landlords, tenants, institutional and private lenders, borrowers and investors in connection with complex and sophisticated commercial real estate, corporate and securities and financing transactions.
EDUCATION
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The Johns Hopkins University (B.A. in Political Science, 1996)
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Benjamin N. Cardozo School of Law (J.D., 1999)
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Editor-in-Chief for Moot Court Honor Society
PRACTICE AREAS
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Real Estate
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Corporate and Securities
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Commercial Finance
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General and Specialty Business Transactions
ROBERT A. KLIPSTEIN
Partner
Robert A. Klipstein is a highly regarded lawyer with extensive experience. He has practiced law for over six decades, representing clients in a wide range of complex matters. Mr. Klipstein has a reputation for his ability to handle cases efficiently and effectively. He has earned numerous accolades for his work, including recognition from prestigious legal publications such as The Best Lawyers in America and Super Lawyers. He concentrates on estate and trust, tax and related matters and immigration matters.
EDUCATION
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Columbia College (B.A., 1957)
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Columbia Law School (J.D., 1960); Harlan Fiske Stone Scholar
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New York University Law School (LLM, 1965)
PRACTICE AREAS
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Immigration and Naturalization
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Estate and Trusts
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Estate Planning
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Tax
NORMAN R. BERKOWITZ
Partner
Norman Berkowitz is a highly accomplished attorney with over 60 years of experience practicing law. He has received numerous awards and recognitions for his work, including being named one of the Best Lawyers in America and New Jersey Super Lawyers. He specializes in Tax Law, Estates and Trusts and Corporate Law. Mr.Berkowitz has an extremely broad-based tax practice. He regularly represents individuals and corporations in tax audit examinations and appeals before the Internal Revenue Service, the New York State Department of Taxation and Finance and other state and local taxing authorities. His extensive experience also includes advising on Estate and Tax Planning and Corporate and Partnership law.
EDUCATION
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New York University (B.S. in Accounting, 1957)
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Brooklyn Law School (J.D., 1961)
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Baruch College, City University of New York (M.B.A. in Taxation, 1964)
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Certified Public Accountant (New York, 1966)
PRACTICE AREAS
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Tax Planning
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Tax Litigation
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Estate Planning
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Corporate Governance
MICHAEL H. DU BOFF
Partner
Mr. Du Boff has an extensive practice in both State & Federal litigation commercial and securities matters as well as arbitration and transactional matters having handled hundreds of arbitrations before the American Arbitration Association and FINRA Dispute Resolution Services and The New York Stock Exchange. He has represented banks, broker/dealers, registered representatives, investors, customers, factors, printers, sales representatives and companies involved in a wide variety of industries.
EDUCATION
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Pace University (Business Administration Degree in Accountancy)
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Brooklyn Law School (J.D.)
PRACTICE AREAS
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Litigation
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Arbitration
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Alternative Dispute Resolution
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Corporate
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General and Specialty Business Transactions and Disputes
ROBERT M. JAFFE
Partner
Mr. Jaffe became a member of the firm in 1990 after 25 years of practice in New York. Prior to joining the firm, Mr. Jaffe was a partner at the law firm of Becker London Kossow & Jaffe, concentrating in the areas of entertainment, labor, employment and arbitration law.
EDUCATION
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University of Pennsylvania (B.A.)
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Columbia Law School (J.D.)
PRACTICE AREAS
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Labor and Employment
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Entertainment
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Arbitration
AVRAM TURKEL
Partner
Co Chair Commercial Litigation Group
Avram Solomon Turkel practices commercial, matrimonial / family, real estate, intellectual property and criminal defense law in State and Federal Courts and Alternate Dispute Resolution forums such as the Financial Industry Regulatory Authority (FINRA), American Arbitration Association (AAA), JAMS and the Real Estate Board of New York (REBNY). Mr. Turkel is adept at negotiating resolutions of complex matters as well as taking them to trial.
Mr. Turkel regularly appears in all metropolitan area courts for both judge and jury trials, motion practice, custody, paternity and support hearings. He has been lead counsel or second seat for full trials and arbitrations to verdict, judgment or award in New York State Supreme Court, United States District Court for the Southern District of New York, AAA, JAMS, REBNY and FINRA.
Mr. Turkel’s appellate practice is more expansive and embraces any lower court matter. He is available to both litigants and trial court attorneys to consult on, draft and argue their appeals. He has written and argued numerous appeals before the New York State Supreme Court Appellate Divisions, the 2nd Circuit Court of Appeals and the New York State Court of Appeals.
Along with his litigation and appellate practice, Mr. Turkel drafts and negotiates employment agreements, vendor / vendee agreements, purchase and sale agreements, contractor / subcontractor agreements, confidentiality / non-disclosure / non-circumvent agreements, shareholders’ agreements, operating agreements, commercial and residential leases, contracts for the purchase and sale of land, condominium and cooperative apartment units and prenuptial and postnuptial agreements.
Mr. Turkel is an adjunct professor of clinical law at Brooklyn law School.
EDUCATION
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Brooklyn Law School, JD 2008
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University of Michigan, B.A. 2002
PRACTICE AREAS
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Business Litigation
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Family law
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Real estate
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Intellectual property litigation
LEON BAER BORSTEIN
Partner
Co Chair Commercial Litigation Group
Leon Baer Borstein is a talented litigator with an impressive legal background that spans four decades. He has represented both individuals and institutional clients from over 50 countries on various legal matters.
Leon has the highest possible rating, AV Preeminent®, from the premier attorney review service, Martindale-Hubbell®. He has held this honor every year for more than two decades — a rare accomplishment.
Mr. Borstein focuses on commercial litigation, matrimonial law, criminal law, and alternative dispute resolution. He served as Adjunct Professor for FINRA Arbitration and Mediation at the San Francisco Law School. Additionally, he is the co-editor of “A Lawyer’s Guide to International Business Transactions” and the Editor of “A Transactional Guide to the U.C.C.”
EDUCATION
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Columbia Law School, LL.B.
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Massachusetts Institute of Technology, B.S.
PRACTICE AREAS
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Commercial Litigation
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Matrimonial Law
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Alternative Dispute Resolution
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Criminal Defense
GRANT E. POLLACK
Partner
Chair, IP & Technology Law Practice Group
Grant Pollack brings to Ballon Stoll P.C. over 30 years of experience representing organizations, ranging from large corporations and government institutions to start-up ventures and individuals, in intellectual property (IP), data protection, related litigation and transactions. Grant has handled thousands of IP matters, including Patents, Trademarks, Copyrights, and Trade Secrets, for clients throughout North America, Europe, and Asia. He leverages his technical background, and his extensive cross-disciplinary legal experience, to add value and better protect IP assets. His technical experience spans cybersecurity and telecommunications, climate technology, aerospace, artificial intelligence and robotics as well as healthcare related technologies.
Grant has lectured extensively on intellectual property topics, including “Doing Business in the U.S. - IP Considerations and Tactics for Foreign Companies", "IP Considerations in Exporting", "Patents, Trade Secrets & Privacy Law", "Legal Issues Confronting Entrepreneurs", "Patent Law and its Business Applications", and the "Law of the Internet in New York". Organizations such as the American Bar Association, New York University's Stern School of Business Administration, the New York State Bar Association, Binghamton University's Center for International Business Advancement, and the American Corporate Counsel Association have sought Grant for his candor and unique comprehensive approach to IP practice and policy. His analytical rigor has led to his testimony as a Patent Law Expert in high profile cases such as Monec Holding AG v. Apple Inc. (E.D. Virginia).
Grant is admitted to the Bars of New York, Pennsylvania, the United States Supreme Court, the United States Court of Appeals for the Federal Circuit, the United States Patent and Trademark Office, and numerous Federal District Courts.
EDUCATION
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Case Western Reserve University, School of Law (JD, 1987)
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Yale University (MS, Mechanical Engineering, 1983)
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Vanderbilt University (BE, Civil & Environmental Engineering, 1982)
PRACTICE AREAS
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Intellectual Property
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Artificial Intelligence
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Privacy & Data Protection
PAUL A. LIEBERMAN
Partner
We are pleased to announce that Paul A. Lieberman has joined Ballon Stoll P.C. as a partner, and please join us in giving Paul a hearty welcome to the Firm in this new position as Chair of our Cybersecruity and Data Privacy practice group, and as a valuable member of the Commercial Litigation, ADR, and Corporate Transactions departments based on his extensive and diversified experience in business and regulatory matters.
We are excited about integrating his innovative ideas and perspectives to our Firm that strengthens its capabilities and services to its diverse client base. Paul has a diversified legal practice devoted to representing clients in the financial services, banking, and insurance sectors utilizing his extensive transactional and regulatory experiences gained from a combination of government, industry, and private law firm positions.
REPRESENTATIVE MATTERS
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Review and revision of BD, RIA, CTA / CPO, Corporate and Non-Profit policies and procedures, Codes of Ethics and training programs.
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Monitored compliance of undertakings in SEC settlements, and developed and implementated with revised corporate governance/compliance policies/procedures.
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Counseled management in meeting examination challenges and coordinating responses to document requests and reviews of internal risk assessments.
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Advised clients in a wide range of securities and advisory issues affecting broker-dealers, investment advisers, insurance GA/CA’s and hedge funds.
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Represented purchaser in corporate transaction involving both domestic US and foreign parties.
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Represented business owner in ‘build to suit’ commercial real estate and warehouse project with purchase option.
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Represented corporation establishing multiple Delaware “captive insurance” companies.
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Counseled on Cybersecurity and Data Privacy matters, including state rules / regulations.
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Debt / Equity underwritings, private placements and alternative investments.
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Obtained pre-hearing summary judgement award from AAA three member panel in multi-party matter.
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Represented clients in the defense of SEC, DOJ, CFTC, FINRA and State securities commission investigations and enforcement proceedings, successfully challenged enforcement recommendations with Wells responses.
Paul A. Lieberman is admitted to bar in NY, NJ, and DC. For over nine decades, Ballon Stoll P.C. attorneys have provided their expertise to create innovative solutions aligning with each client's requirements.
EDUCATION
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American University. Washington College of Law. J.D
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City College of New York, B.A.
PRACTICE AREAS
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Arbitration
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Corporate
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Insurance Defense
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Labor & Employment
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Litigation
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Mergers & Acquisitions
DARYNA SEMENIUK
Junior Partner
Daryna Semeniuk currently serves as a Junior Partner at Ballon Stoll P.C. where her practice encompasses a wide range of immigration matters, including preparing and filing non-immigrant and immigrant visa petitions, with a primary emphasis on business, talent, and other employment-based visa applications. Daryna's experience also extends to corporate and real estate finance matters, where she drafts corporate documents, real estate transfer documents, and mortgage documents.
Before her tenure at Ballon Stoll P.C., Daryna gained significant experience in Ukraine as an In-House Counsel and as a Legal Advisor. In these roles, she drafted and evaluated a variety of legal documents and represented clients in civil and commercial court proceedings.
EDUCATION
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Fordham University School of Law - Master of Laws (LL.M) in Banking, Corporate & Financial Law (2020)
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Yaroslav Mudryi National Law University - Specialist Degree in Law (2011)
PRACTICE AREAS
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Immigration
ANDREW J. MALLON
Junior Partner
A.J. serves in the firm’s Litigation Department. His practice is predominantly focused on matrimonial, family, and commercial cases where he has extensive experience working with high net worth individuals on complex disputes. A.J. handles all aspects of litigation, from negotiation through trial, and focuses on achieving creative solutions for his clients. He is a 2024 Super Lawyers Rising Star selection and a 2022 Avvo Clients’ Choice Award winner. A.J. is barred in New York and New Jersey and is federally barred in the Southern and Eastern Districts of New York as well as the United States Court of Appeals for the Second Circuit.
Specifically, A.J.’s family law practice involves divorce, custody, child support, alimony/spousal support/maintenance, post-judgment litigation and drafting prenuptial and postnuptial agreements. He regularly handles special immigrant juvenile custody and guardianship matters where he assists qualifying children and young adults achieve a path to a Green Card. A.J. also regularly litigates commercial cases and other litigation matters where he, inter alia, drafts pleadings and motions, appears in court, handles discovery and, if need be, prepares appeals.
A.J. earned his Juris Doctor from the Benjamin N. Cardozo School of Law. While there, he served as a Notes Editor for the #1 ranked dispute resolution journal in the nation, the Cardozo Journal of Conflict Resolution. He also served on three executive boards with the Cardozo Sports Law Society, most notably, as Vice President. A.J. graduated cum laude with a Bachelor of Science from Syracuse University’s Renée Crown University Honors Program.
EDUCATION
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The Benjamin N. Cardozo School of Law (J.D., 2020)
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Syracuse University (B.S., 2017)
PRACTICE AREAS
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Matrimonial & Family
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Entertainment & Sports
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Immigration
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Commercial Litigation
DANIELLE C. ROSENBERG
Partner
Danielle Conn Rosenberg is the firm’s Partner. Her practice includes matters in Family/Matrimonial Law, Immigration, Criminal Law, Labor & Employment Law and Litigation.
Ms. Conn Rosenberg’s academic journey began at Brooklyn College - City University of New York, where she earned her Bachelor of Arts. She then pursued her Juris Doctor at Nova Southeastern University Shepard Broad Law Center, graduating with Honors at an accelerated pace. During her time in law school, she gained invaluable experience through internships with the New York Society for the Prevention of Cruelty to Children, the Shepard Broad Law Center Civil Law Clinic - Family Law, and the Children First Project. While practicing law in Florida, Ms. Conn Rosenberg was an active member of The Craig S. Barnard American Inn of Court. Her insightful analysis of The Florida KidCare Act was published in the Florida Bar Journal.
Ms. Conn Rosenberg is Admitted to practice in New York, the Eastern and Southern Districts of New York, as well as Florida and the Southern District Court of Florida and before the United States Supreme Court. Additionally, she is the Founder of Dyspraxia DCD America, a nonprofit organization, and has worked with both U.S. Congress and the Senate to pass legislation to support persons with Dyspraxia in America, demonstrating her commitment to advocacy and community service.
EDUCATION
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Brooklyn College – City College of New York (B.A.) with Honors
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Nova Southeastern University Shepard Broad Law Center – J.D. with Honors
PRACTICE AREAS
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Family Law/Matrimonial Law
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Immigration
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Labor & Employment Law
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Criminal Law
ALYSSA GRZESH
Associate Attorney
Alyssa is an Associate in the firm’s Litigation Department. Prior to joining the firm, she served as a Litigation Associate at Borah Goldstein, a renowned real estate litigation firm, where she focused primarily on residential landlord/tenant matters. She also served as Of Counsel to two New-York based firms specializing in commercial litigation and employment law.
Alyssa previously served as executive director of a legal nonprofit based in Washington, D.C. Alyssa is an active member of the Commercial and Federal Litigation Section of the New York State Bar Association and has had articles published in the NYSBA Journal and in the NY Litigator. Ms. Grzesh serves as a vice president of the Jewish Lawyers Guild, and as Director of Programming for the American Association of Jewish Lawyers and Jurists, where she worked with a team of lawyers on amici briefs filed in the U.S. Supreme Court in support of Holocaust restitution plaintiffs.
EDUCATION
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Benjamin N. Cardozo School of Law (2013)
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Wellesley College (2009)
PRACTICE AREAS
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Litigation
TYLER FIERRO
Associate Attorney
Tyler serves as an Associate in the firm's Litigation Department where he handles commercial, matrimonial, labor, employment, and immigration law matters. He prepares pleadings, motions, handles discovery, and frequently attends court. Tyler is admitted to practice law in the State of New York.
Tyler has been with Ballon Stoll P.C. since June 2022. He previously worked for the United States Equal Employment Opportunity Commission and for a boutique matrimonial law firm.
Tyler graduated from Benjamin N. Cardozo School of Law, magna cum laude, Order of the Coif, where he served as a Notes Editor for the Cardozo Journal of Conflict Resolution, the #1 ranked dispute resolution journal. Before earning his J.D., Tyler earned a Bachelor of Science in Managerial Economics from the University of Massachusetts, Amherst.
EDUCATION
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Benjamin N. Cardozo School of Law (J.D., 2024)
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University of Massachusetts, Amherst (B.S., 2020)
PRACTICE AREAS
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Commercial Litigation
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Matrimonial Law
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Labor and Employment Litigation
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Immigration
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RUDY A. DERMESROPIAN
Of Counsel
With a background in finance, science, and business management, attorney Rudy A. Dermesropian has a broad understanding of the realities faced by individuals and businesses in different cases across the legal spectrum. Running his own private firm in the heart of New York, NY provides Rudy with the opportunity to personally address his clients' needs from start to finish.
With communication and customer service held in the highest regard, Rudy adds a personal touch to his knowledgeable legal counsel. From providing representation in both civil and commercial litigation cases to guiding individuals and businesses through the complexities of employment disputes and corporate law, Rudy provides the quality of service that he believes his clients deserve.
EDUCATION
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Hofstra University School of Law (J.D., 2008)
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St. John's University (B.S., 2004)
PRACTICE AREAS
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Labor and Employment
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Wage and Hour
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Medical Malpractice
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Personal Injury
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Landlord Tenant Litigation
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Commercial Litigation
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Appellate Practice
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Dispute Resolution / Arbitration
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Corporate Law
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Immigration Law
SUNNY S. KIM
Of Counsel
Sunny S. Kim is of counsel in the firm's Intellectual Property department. Prior to joining the firm, Ms. Kim was an Associate at Pitney Hardin LLP and Codispoti & Mancinelli LLP.
Ms. Kim received her B.A. from Columbia University in 1997 and J.D. from the University of Iowa in 2002, where she served as Managing Editor of the Iowa Law Review.
Ms. Kim is admitted to practice in New Jersey, New York and before the United States Patent and Trademark Office. She is admitted to the Bars of the United States District Courts for the Southern and Eastern Districts of New York, as well as the United States District Court for the District of New Jersey.
EDUCATION
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Columbia University
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University of Iowa; Managing Editor of the Iowa Law Review
PRACTICE AREAS
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Intellectual Property
BINGYANG ZHANG
Associate Attorney
Bing is an Associate Attorney in the firm's Litigation Department. Involved throughout the litigation process, he handles court appearances, discovery, mediations, and preparation of pleadings and motions. He draws on experience working at a few law firms where he handled a diverse civil litigation caseload including tort defense, labor and employment law, and commercial litigation. He has experience representing individuals, business entities, and public-benefit corporations and agencies, in state and federal courts in New Jersey and New York.
Bing is admitted to the Bars of the State of New York, the State of New Jersey, the United States District Courts for the Southern and Eastern Districts of New York, as well as the United States District Court for the District of New Jersey.
EDUCATION
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William S. Richardson School of Law, University of Hawai'i (J.D. 2021)
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Pennsylvania State University, University Park (B.S. 2014)
PRACTICE AREAS
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Labor and Employment
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Commercial Litigation
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Immigration
OUR MISSION
Provide exceptional legal services to our clients with integrity, professionalism, and respect for the law.
We strive to be a trusted advisor to our clients, and to achieve their goals through innovative and effective legal strategies.
CORE VALUES:
Commitment to Excellence
We are striving to deliver high-quality legal services to our clients with the utmost professionalism and attention to detail.
Strong Work Ethic
We prioritize professionalism and punctuality, and expect all professionals to always be prepared, focused, and diligent in their work.
Dependable and Trustworthy
We have have a strong sense of responsibility and we prioritize honesty, integrity, and loyalty to our clients and legal community.