John "Jack" Losinger advocates on behalf of businesses and individuals in connection with commercial disputes, with a specific focus on violations of restrictive covenants and the misappropriation of trade secrets and confidential information.
Jack’s wide range of litigation experience - which includes employment lawsuits arising from claims of discrimination and harassment, contractual and estate disputes, environmental cost recovery actions, tax appeals, and municipal court matters - gives him the ability to quickly adapt and pursue a strategy that is in the best interest of his client. By making a concerted effort to understand the strengths and weaknesses of his client’s position, he has had success negotiating favorable pre-suit resolutions and, when necessary, litigating in state and federal court and in arbitration. Jack’s clients have included individuals, small companies and publicly traded corporations.
Jack also has extensive experience conducting comprehensive investigations of a variety of sensitive matters for institutions of higher education and private sector employers, including allegations of inappropriate conduct in the workplace, ethical violations, conflicts of interest, policy violations, and bullying.
Jack is regularly appointed by Chancery Division judges in Essex County and Morris County to serve as the court-appointed attorney for alleged incapacitated persons in guardianship matters.
Capparelli v. Lopatin, 459 N.J.Super. 584 (App. Div. 2019) (applying the doctrines of frustration of purpose and impossibility to affirm the trial court’s avoidance of a written contract)
John M. Losinger
Rated by Super Lawyers
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New Jersey State Bar Association
Programs Co-Chair, ABA Business Torts and Unfair Competition Committee
Judging Panel, Vincent J. Apruzzese High School Mock Trial Competition
Represented an employer and successfully thwarted two former employees’ efforts to misappropriate the employer’s confidential information, violate their restrictive covenants, and work for a direct competitor. After filing a Verified Complaint and Order to Show Cause, and securing temporary restraints, and a preliminary injunction, the matter was resolved to the employer’s satisfaction.
Super Lawyers Recognizes 24 Saiber Attorneys in 2023 Edition
May 11, 2023
Jack Losinger Discusses the Uncertain Future of the Enforceability of Noncompete Agreements with ROI-NJ
January 25, 2023
Jack Losinger Featured in ROI-NJ Article on Noncompete Agreements
August 10, 2022
Jack Losinger Serves on Judging Panel for the Vincent J. Apruzzese High School Mock Trial Competition
February 14, 2022
Saiber Elevates Members and Counsel
January 3, 2022
Jack Losinger Named as a “New Leader of the Bar” by the New Jersey Law Journal
August 3, 2021
Super Lawyers Recognizes 27 Saiber Attorneys in 2021 Edition
March 23, 2021
Jack Losinger Named as Programs Co-Chair of the ABA’s Business Torts and Unfair Competition Committee
September 21, 2020
Super Lawyers Recognizes 30 Saiber Attorneys in 2020 Edition
March 13, 2020
Super Lawyers Recognizes 34 Saiber Attorneys in 2019 Edition
March 12, 2019
Super Lawyers Recognizes 30 Saiber Attorneys in 2018 Edition
March 18, 2018
Saiber Elevates Two Associates to Counsel
February 15, 2018