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Jonathan N. Portner

Managing Partner
Locations Served:
  • Washington, D.C.


Mr. Portner is the Managing Partner of Portner & Shure, P.A. and is licensed to practice law in Maryland, Virginia and Washington, D.C. He represents clients in matters of criminal defense, personal injury, including motor vehicle accidents, medical malpractice, workers' compensation, and drug and medical device injuries. Mr. Portner supervises Portner & Shure’s seven fully staffed offices, a staff of fifty and four lawyers. Every week he is involved in helping to recover over $500,000 in settlements and trial awards against the major insurance companies. Further, Mr. Portner is routinely in court, or advising in serious criminal matters throughout Maryland, Virginia, and D.C.

After graduating cum laude from the University of Baltimore Law School and serving as an associate editor of the Law Review, Mr. Portner clerked for Chief Judge Gilbert of the Maryland Court of Special Appeals. Thereafter, Mr. Portner served as a litigator at Gordon, Feinblatt. There, he obtained countless large settlements, binding arbitration and trial awards. As a result, the head of the personal injury department selected Mr. Portner to work with co-counsel, Levin, Papantonio (one of the country’s top personal injury firms) in a sick building case in the District of Columbia. The case resulted in a million-dollar verdict. Soon thereafter, Mr. Portner left to start Portner & Shure.

Mr. Portner’s philosophy with insurance companies is to be aggressive, but fair. Above all else, Mr. Portner focuses on client satisfaction and works tirelessly on behalf of his clients. Mr. Portner dedicates considerable time to all of his endeavors but believes each personal injury or criminal case should be treated as if it's the only case of the Firm. He has obtained over $300 million in recoveries because of his attention to detail, willingness to litigate, and insistence that his staff have constant communication with each client.

During the Covid-19 shutdown he continued to battle with the insurance companies and obtained a $900,000 settlement in a Newport News, Virginia car accident, a $750,000 settlement in a Hagerstown, Maryland wrongful death case, as well as a $450,000 settlement in a Bel Air, Maryland car accident case.

In addition to recovering over three hundred million dollars for our clients, Mr. Portner has tried and won hundreds of cases against some of the top insurance defense attorneys and prosecutors in both State and Federal Court. Portner & Shure, P.A. is not just a personal injury firm that settles cases. Portner & Shure, because of this aggressive policy, litigates automobile accident, workers’ compensation, medical malpractice, and criminal defense cases almost daily. Insurance companies and prosecutors are well aware of the firms that don't back down. We are fully prepared to go toe to toe with big insurance companies and prosecutors and have a track record of excellent results.


As the founder of Portner & Shure, P.A., Mr. Portner has been recognized for his expertise within the legal community. Mr. Portner currently supervises the personal injury and criminal defense departments of the law firm. As a result, he can be seen routinely working in all of our seven offices throughout the month.

Mr. Portner is a member of the Multi-Million Dollar Advocates Forum, which is an organization that recognizes the top trial lawyers in America. This organization comprises the most prestigious group of trial lawyers in the United States, and fewer than 1% of U.S. lawyers are eligible to become members.

Mr. Portner has also been recognized by: Time Magazine, The National Law Journal, the National Top 100 Trial Lawyers for personal injury, workers’ compensation, and criminal defense, American Top 100 Attorneys, Million Dollar Advocates Forum, Multi-Million Dollar Advocates Forum, Best Attorneys of America, Lawyers of Distinction Recognizing Excellence in Personal Injury (the country’s top 1%), as well as “Top 10” in Maryland by the American Institute of DUI/DWI Attorneys, and “10 Best” for Criminal Law. In 2019 and 2020, he was selected as the Personal Injury Litigator of the Year by the American Institute of Trial Lawyers, and named a Top Rated Attorney for 2020 by AVVO. Finally, since 2018, Mr. Portner has been recognized by US News and World Report, as one of America’s “Best Lawyers.”

Mr. Portner is also a member of the American Association for Justice, Motor Vehicle Trial Lawyer Association, President’s club in the Maryland Association for Justice. Further, he is a member of the National College of DUI Defense.

Mr. Portner has dedicated a considerable amount of Firm resources to help non-english speaking clients stand up to insurance companies and the government in criminal cases. The Firm provides the highest level of service to Hispanic, Chinese, Korean, and Vietnamese accident victims within the Maryland, Virginia, and D.C. areas. The Firm has a staff of over twenty multi-lingual Spanish speaking paralegals or legal assistants, as well as bilingual Chinese, Vietnamese, and Korean speaking paralegals who work closely with clients. As a result, no longer are many foreign speaking accident victims at a disadvantage when battling the insurance companies after an automobile accident or forced to use inexperienced criminal defense attorneys.

Recoveries from the Firm and Mr. Portner can be viewed in the Case Results section of this site. Further, results in recent criminal cases can now be viewed in the Criminal Defense section. Along with tremendous results, Mr. Portner and/or the law Firm have hundreds of 5 star client reviews on Google in Maryland and Virginia.

Bar Admissions

  • Maryland, 1988
  • District of Columbia, 1989
  • Virginia 2018


  • English (Primary)

Areas of Practice

Litigation Percentage

  • 10% of Practice Devoted to Litigation

Professional Associations & Memberships

  • American Association for Justice, Member
  • Maryland Association for Justice (President's Club), Member
  • National College of DUI Defense, Member
  • National Association of Criminal Defense Lawyers, Member
  • Maryland State Bar Association, Member
  • Howard County Bar Association, Member
  • District of Columbia Bar Association, Member
  • United States District Court for the District of Maryland, Member
  • United States District Court for the District of Columbia, Member
  • Superior Court for the District of Columbia, Member
  • Million Dollar Advocates Forum, Member
  • Multi-Million Dollar Advocates Forum, Member
  • American Institute of DUI |10 Best
  • American Institute of Criminal Law | 10 Best
  • Best Attorneys of America Lifetime Charter Member
  • National Top 25 Trial Lawyers for Workers Comp
  • Top 100 Lawyer by The National Trial Lawyers Association

Honors & Awards

  • Platinum Seal Award, 2013-Present
  • Trial Board of Regents Litigation Award for General Injury and Auto Accidents
  • Top 100 Trial Award for Personal Injury and Criminal Defense
  • American Institute of Criminal Law Attorneys 2019 10 Best Criminal Law Attorneys for Client Satisfaction
  • Multi-Million Dollar Advocates Forum
  • The National Trial Lawyers
  • Best Attorneys of America - Lifetime Charter Member
  • Million Dollar Advocates Forum, Jonathan N. Portner
  • Avvo rating 10.0
  • Avvo Rating 10.0
  • 10 Best in 2016 Client Satisfaction
  • 5 Star Google Reviews
  • 10.0 Superb Rating - Top Attorney Personal Injury
  • SuperLawyers 2018
  • MV TLA
  • Lead Cousel Rating
  • CTLA
  • American Association for Justice
  • Maryland Association for Justice

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