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Mark P. Kesslen
Member of the Firm

Roseland
Tel: 973.597.2330 | Fax: 973.597.2331


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Mark P. Kesslen, Chair of the Intellectual Property section of the firm's Tech Group and co-chair of the IP Litigation Group, provides strategic guidance to technology-based businesses in patent strategy (licensing, litigation, and prosecution), outsourcing and alliances.

In 2008, Mr. Kesslen was named among the nation's top 50 IP attorneys under age 45 by IP Law and Business magazine. He was also recognized by Chambers USA: America's Leading Lawyers for Business in 2006, 2007 and 2008 as a leading intellectual property attorney.

Mr. Kesslen has been quoted and provides commentary on intellectual property issues for various publications including Business Week, Red Herring, The Wall Street Journal, Dow Jones, TheStreet.com and The Hollywood Reporter. Mr. Kesslen is member of the Advisory Board of Pro Bono Partnership, a leading provider of legal services to nonprofit community-based organizations. For the last few years, Mr. Kesslen was a guest lecturer at Columbia University on Intellectual Property Law for the Law and Technology class for the Master of Science in Technology Management Program.

Prior to joining Lowenstein Sandler, Mr. Kesslen ran JPMorganChase’s Technology, Sourcing & Intellectual Property Practice Group for the Legal Department world-wide. In that role, Mr. Kesslen had more than 30 lawyers at JPMorganChase reporting to him from offices across the U.S., Europe and Asia. In his 8 years at JPMorganChase, Mr. Kesslen served as IP counsel in dozens of venture financings on behalf of Lab Morgan and its predecessor chase.com, incubators of emerging technology and financial service companies. Mr. Kesslen has also served as IP counsel on numerous M&A, IPO and venture capital transactions. Mr. Kesslen chaired the Financial Services Roundtable’s patent working group, has testified before Congress on patent reform, and served as JPMorganChase’s lead internal lawyer on multi-billion dollar outsourcing deals and patent litigation. He also served for five years on the board of directors of the Intellectual Property Owner’s Association. Over the course of Mr. Kesslen’s career, he has prosecuted hundreds of patents and designed and implemented the patent program at JPMorganChase. Mr. Kesslen has handled matters in software, semiconductors, hardware, financial services, business methods and wireless and VoIP communications. Prior to joining JPMorganChase in 1997, Mr. Kesslen was an associate in the IP Group of Stroock & Stroock & Lavan.

Recent Representative Speaking Engagements:
  • The Future of IP License Agreements: MedImmune v. Genentech, New Jersey Corporate Counsel Association (NJCCA), February 7, 2007
  • IQPC, 2nd Patent Strategies Conference, San Francisco, CA, Moderator, "Patent Trolls" - Are They Real or Imaginary, October 2006
  • NJCCA Annual Meeting, Speaker, Significant Developments in Patent Law and Litigation, September 2006
  • Co-chair, ACI Conference on Optimizing Patents and IP in Financial Products and Services, June 2006
  • Massachusetts Institute of Technology, The Association of Alumni and Alumnae of the Massachusetts Institute of Technology: Panelist "Can little acorns grow from mighty oaks?" April 2006





  • Recent Patent Law Development: Impact on Accused Infringers
    LifeSciTech, Spring 2008
    Mark Kesslen

  • The Patent Trial Bar Breathes A Sigh Of Relief: In Re Seagate
    The Metropolitan Corporate Counsel, November 2007
    Mark Kesslen

  • The Impact of MedImmune v. Genentech on the Future of Intellectual Property Agreements
    New Jersey Corporate Counsel Association (NJCCA), April 5, 2007
    Mark Kesslen

    View More...



  • 2007 Venture Terms Survey
    Edward Zimmerman, Mark Kesslen, Elaine Hughes, Anthony Pergola, Raymond Thek




  • Mark Kesslen comments on how the current economy is impacting the generation of new patent applications in industries such as life sciences, Internet and telecom., BlackEnterprise.com, June 23, 2008

  • Mark Kesslen comments on how the current economy is impacting the generation of new patent applications in industries such as life sciences, Internet and telecom., New Jersey Business, June 2008

  • Mark Kesslen's selection as one of the nation's top 50 IP attorneys under age 45 is highlighted., Metropolitan Corporate Counsel, June 2008

    View More...

    Impressed interviewees report:  
    'The lawyers really care about our business
    and
    are truly dedicated to helping us succeed'
    – 2008 Chambers USA Guide




    Corporate
    Intellectual Property & Patents
    Outsourcing
    The Tech Group


    Education

    Case Western Reserve University School of Law (J.D., 1989)
    Tufts University (B.S., 1986),  Electrical Engineering




    New York
    New Jersey




    1990, U.S. Patent & Trademark Office




    • National Venture Capital Association
      • Patent Group Advisory Board Member
    • Community Chest of Englewood, Englewood Cliffs and Tenafly
      • President 2006-present
      • Member 2002-present
    • Member of the Advisory Board of the Entrepreneurial Leadership Program at Tufts University



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