Jonathan N. Portner, Esquire

Portner & Shure Law Firm Serving Maryland, Virginia & Washington D.C.

Jonathan N. Portner, Esquire
Managing Partner
Columbia, Maryland
410-730-3605 (Md)
301-854-3350 (Md)

Mr. Portner has been an attorney licensed to practice in Maryland and Washington, D.C. since 1988. He represents clients in matters of personal injury, including motor vehicle accidents, medical malpractice, workers' compensation, drug and medical device injuries, and criminal defense. He has been recognized by:  Time Magazine, the National Top 100 Trial Lawyers, Multi-Million Dollar Advocates Forum, Best Attorneys of America, as well as "Top 10" in Maryland by the American Institute of DUI/DWI Attorneys.

10.0Jonathan Neal Portner

After graduating cum laude from the University of Baltimore Law School and serving as an associates editor of the Law Review, he clerked for the Chief Judge of the Maryland Court of Special Appeals.  Thereafter, Mr. Portner served as a litigator at Gordon, Feinblatt, one of Baltimore's largest law firms.  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 currently supervises the personal injury and litigation departments of the law firm.  As a result, he can been seen routinely working in a different one of our five staffed offices.  Every single week he's involved in obtaining over $500,000 in settlements or trial awards against the major insurance companies.   Recent cases that he has resolved can be found here 2016 and 2017 Case Results.

As a result of his vast litigation experience, Mr. Portner does not want others to view Portner & Shure, P.A. as a personal injury firm that just settles cases. Portner & Shure, because of this mentality, litigates automobile accident, workers' compensation, medical malpractice, and criminal defense cases almost daily and certainly every week of the year. Insurance companies and prosecutors are well aware of the firms that don't back down.

Mr. Portner has personally tried and won hundreds of cases against some of the top insurance defense attorneys and prosecutors in both State and Federal Courts. In the last two years alone he has recovered approximately fifty million dollars for his clients. 

Recently, he along with attorney Kevin Ruby obtained awards of one million dollars in three (3) different cases.  It is a fact that most injury attorneys do not obtain a single million dollar award during the course of their careers. As a result of these large injury awards, the Million Dollar and Multi Million Dollar Advocates Forum,  organizations that recognize the top trial lawyers in America, announced that Jonathan Portner is a certified member. These organizations comprise 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 dedicated a considerable amount of Firm resources to help non-english speaking clients stand up to insurance companies. The Firm provides the highest level of experience to Hispanic, Chinese, Korean, Vietnamese, and Japanese accident victims within the Maryland, Virginia, and D.C. areas. The firm has a staff of over thirty multi-lingual Spanish speaking paralegals or legal assistants, as well as bilingual Chinese and Korean speaking paralegals who work closely with clients. As a result, no longer are many foreign speaking accident victims frustrated in dealing with insurance companies after an automobile accident.

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 $250 million in recoveries because of his attention to detail, and insistence that his staff have constant communication with each client.

Areas of Practice

Litigation Percentage

  • 10% of Practice Devoted to Litigation

Bar Admissions

  • Maryland, 1988
  • District of Columbia, 1989

Honors and Awards

  • Platinum Seal Award, 2013-Present

Professional Associations and 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


  • English (Primary)