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Allen Klein
Allen Klein

Allen Klein

Allen has spent decades helping parties to complex commercial transactions achieve consensus.  He has advised clients in a wide array of industries in billions of dollars of complex commercial transactions, many focused on evolving technologies and technology services.   Allen has advised on, structured, drafted, negotiated, and/or managed the following transaction types:

  • AI and machine learning
  • business process outsourcing
  • cloud
  • credit card and item processing
  • ERP
  • facilities management outsourcing
  • finance and accounting outsourcing
  • FinTech
  • human resources outsourcing
  • IP development
  • IP transfer
  • joint ventures
  • MMIS implementations
  • software and systems development and implementation
  • software licensing
  • logistics outsourcing
  • SaaS
  • technology outsourcing
  • telecommunications outsourcing
  • trademark licensing

Allen has represented leading companies in a wide array of industries.

  • Aerospace
  • Airline
  • Animal Health
  • Apparel
  • Automotive
  • Banking and Financial Services
  • Chemical
  • Design and Distribution
  • Educational Software
  • FinTech
  • Food and Beverage
  • Governmental Agencies
  • Health Care
  • Hospitality
  • Insurance and Annuity
  • Manufacturing
  • Online Gaming
  • Pharmaceutical
  • Pharmaceutical Services
  • Software
  • Technology

Allen also has served as a senior litigation consultant assisting counsel to service providers and customers arbitrating and litigating disputes arising from technology transactions. Recent engagements, like advising UK counsel to an international software provider in a multi-hundred-million-dollar arbitration before the London Court of International Arbitration, have sharpened his awareness of the skills required to successfully resolve disputes.



Allen helps parties identify and articulate issues in controversy, recognize where there interests may be compatible, and identify opportunities for mutual gain. He does this by bringing to each mediation:

  • an in-depth understanding of the interests of the parties to a commercial transaction. He sees all sides of a dispute and understands the needs and motivations of all parties;
  •  an innate ability to find solutions to issues and problems. A key to Allen’s success as a commercial transactions lawyer for more than 30 years, has been his ability to help the parties find solutions to issues and problems that worked for both parties;
  • an in-depth knowledge of the contracts under which disputes arise, the provisions and issues giving rise to disputes, and the range of resolutions of such disputes. Allen has negotiated hundreds of commercial arrangements including billions of dollars of technology agreements;
  • a broad and deep understanding of commercial practice, domestically and internationally. Allen has assisted clients with transactions throughout the United States as well as in the United Kingdom, the Netherlands, Germany, Switzerland, Canada, India, and South Africa;
  • a broad and deep understanding of market practices including software and other technology industry practice;
  • broad and deep experience assisting personnel with divergent interests reach consensus. Structuring complex commercial and technology transactions required Allen to drive consensus among users, IT executives, business executives, and financial executives when representing customers, and sales and marketing executives, financial executives, developers, and account managers when representing suppliers.


Certified Circuit Mediator, Florida Supreme Court, 2021

J.D., State University of New York at Buffalo, Buffalo, NY. 1978

Top 10%, Buffalo Law Review, Justice Philip Halpern Award for Excellence in Legal Writing

B.A., History, Cornell University, Ithaca, NY. 1975


Areas Of Practice

  • Automotive
  • Boundary Disputes
  • Business
  • Civil Rights (discrimination)
  • Commercial
  • Construction
  • Contracts
  • Copyright
  • Entertainment
  • Franchise
  • General
  • Government
  • Intellectual Property
  • International
  • Legal Malpractice
  • Partnership
  • Professional Fees
  • Public Policy
  • Tax
  • Technology
  • Trademark
  • Workplace

Additional Services

  • Arbitrator
  • Facilitator
  • Mediating Lawyer
  • Mediator-Arbitrator
  • Representational Lawyer

Fees and Provisos

I typically bill on a time and expense basis with my rate based on the number of parties to the mediation.

Liability Insurance

  • Yes

ADR Training

  • Florida Supreme Court Approved Training for Circuit Mediation Certification
  • New York State Bar Association Basis and Advanced Courses


  • Consistently recognized by the top U.S. and international rating services for lawyers: • Martindale-Hubbell: AV-Preeminent Rating for twenty-two consecutive years • Chambers US: “Talented and hardworking” and “widely recognized as a terrific attorney” • Legal 500 US: “One of the best outsourcing advisors in the country” with “the right strategic focus and sound tactical execution in steering his clients through complex transactions” and an “excellent market reputation for outsourcing and transactional work” • Legal 500 US: one of nine attorneys nationwide cited as a “Leading Lawyer” for Technology Transactions generally and one of 12 attorneys nationwide cited as a “Leading Lawyer” for Technology Outsourcing • Chambers Global: “Allen Klein [is a] key player in the U.S. market”

Professional Associations

  • Admitted to practice law in New York and the District of Columbia


  • Available Upon Request