Mark J. Oberstaedt

Mark is a shareholder in the firm’s Litigation Department and the Assistant Chair of the  Business Litigation Group.  Mark’s practice covers all aspects of trial and appellate work relating to commercial litigation and business disputes in the federal and state courts in New Jersey, Pennsylvania and other courts throughout the country. He also represents clients in private and public arbitration and mediation matters including numerous arbitrations before the National Association of Securities Dealers.

Mark has extensive experience handling many types of complex commercial litigation matters including: ERISA litigation and other employee benefit matters; corporate governance and shareholder rights litigation; shareholder and partnership disputes; securities litigation; protection of trade secrets and unfair competition; tort and fraud class action litigation; breach of fiduciary duty, fraud and civil RICO (federal and state); consumer fraud actions; breach of contract litigation; and complex environmental matters.

While Mark is recognized for his expertise in complex, high stakes matters, he also continues to successfully represent small-to-mid-sized businesses in franchise disputes, shareholder and partnership disputes, and other litigation matters. 

Representative Experience

Examples of litigation matters where Mark has represented the firm’s clients include:

  • Federal court jury trial representing one of the world’s leading telecommunications companies
  • Federal court bench trial representing major manufacturers in CERCLA environmental case
  • Representing licensees of the BlueCross BlueShield Association and third-party benefits administrators in state and federal courts across the country in ERISA matters
  • Arguments before numerous appellate tribunals including the Third Circuit Court of Appeals, the en banc Superior Court of Pennsylvania, and the New Jersey Appellate Division
  • Over 100 separate litigation matters representing one of world’s leading financial brokerage firms
  • Breach of UCC requirements contract action against the world’s largest envelope manufacturer
  • Bet-the-company franchise termination litigation against one of the world’s leading manufacturers of diesel marine engines
  • Shareholder and partnership disputes in closely held corporations and limited liability companies in New Jersey and Pennsylvania

Professional And Community Involvement

  • Current Affiliations include:
    • President, Cherry Hill East Music Boosters Association
    • Board of Directors of the Cherry Hill Soccer Club
    • Board of Directors of the Misericordia University Alumni Association
    • Tournament Director, 2015 Kick or Treat Youth Soccer Tournament
    • Cherry Hill Citizen’s Cabinet
    • Cherry Hill Business Council
    • Camden County (N.J.) Bar Association
    • New Jersey Bar Association
    • Youth soccer coach
  • Prior affiliations include:
    • Appointed by Chief Justice Rabner to New Jersey Supreme Court Special Committee on Electronic Filing
    • President of the Misericordia University Alumni Association
    • President of the Haddonfield School of Performing Arts
    • President of the Haddontowne Swim Club
    • President of Cherry Hill Soccer Club
    • Chairperson, 50th Annual Cherry Bowl Swimming Championships (2009)
    • Chairperson, 48th Annual Cherry Bowl Swimming Championships (2007)
    • Editorial Board of the New Jersey Law Journal
    • Misericordia University Board of Trustees
    • Editor-in-Chief, Seton Hall Law Review
    • Camden County Bar Association Mock Trial Coordinator (1993-1999)
    • Youth soccer, baseball, and basketball coach

Awards And Recognition

  • Named a “Top Attorney” for Business Litigation by South Jersey Magazine (2009-2011, 2014)
  • Young Alumnus of the Year, Misericordia University
  • Harry S. Truman Scholar from New Jersey


  • Sample Publications
  • Sample Presentations
    • May It Please the Court – Effective Case Presentation at Trial
    • Advanced Issues in Employee Benefits Law in Pennsylvania
    • Succeeding in Federal Court
    • Representing Your Client in Federal Court
    • The Mechanics of New Jersey Civil Procedure
    • Rules and Procedures for Federal Court Success


Archer Attorneys and Summer Associates Attend Philadelphia Diversity Law Group Reception

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