Attorneys of Onder Law - St. Louis Personal Injury Attorneys
Mark Berns - St. Louis Personal Injury Lawyer

Mark Berns

Pharmaceutical & Medical Products Litigation

Email Address:berns@onderlaw.com

Mark Berns practices law in the areas of personal injury, products liability, mass tort and class action litigation.

Mark was born and raised in St Louis. He graduated with a Bachelor of Arts in English Literature from Knox College. Following his time at Knox, he obtained his law degree from Saint Louis University School of Law. He gained practical legal experience outside the classroom as a legal law clerk for The Honorable E. Richard Webber at the United States District Court, Eastern District of Missouri.

After law school, Mark joined a well-respected St. Louis law firm and focused his practice primarily on litigating personal injury claims on behalf of plaintiffs. He worked on a variety of serious injury and death cases including products liability, motor vehicle accidents, trucking accidents, workplace accidents and workers' compensation injuries.

Since joining Onder, Shelton, O'Leary & Peterson, Mark focuses his practice on representing individuals in the areas of personal injury and products liability, including mass tort litigation on a national scale.

Mark is admitted to practice law in Missouri and the United States District Court for the Eastern District of Missouri. He is active in the community; including his parish's youth ministry and his high school's alumni board.

Mark lives in St. Louis and he and his fiancée Taylor are planning a spring 2016 wedding.

Free Case Review


Onder Law holds the highest possible peer review rating from Martindale-Hubbell

Onder Law holds the highest possible peer review rating from Martindale-Hubbell

Million Dollar Advocates Forum

We have been recognized by the Million Dollar Advocates Foum for securing million dollar settlements on behalf of our clients. Fewer than 1% of all attorneys receive this recgonition.

Multi-Million Dollar Advocates Forum

We have been recognized by the Million Dollar Advocates Foum for securing multi-million dollar settlements on behalf of our clients. Fewer than 1% of all attorneys receive this recgonition.

Super Lawyers

The attorneys of Onder Law have been recognized as Super Lawyers

Multi-Million Dollar Advocates Forum

We have been nominated as one of the Best Attorneys in America - The Most Qualified Attorneys in Our Country by Rue Ratings

Member National Trial Lawyers Association

The attorneys of Onder Law are proud members of the National Trial Lawyers Association


Onder Law handles mass tort claims that are filed in federal courts nationwide. Attorneys at Onder Law are licensed only in Missouri, Illinois and Kansas; however our attorneys have handled cases nationwide* including in: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin and Wyoming.

Attorneys at Onder Law have represented clients in federal multi-district litigation in the following cities*: Atlanta, GA, Austin, TX, Baltimore, MD, Birmingham, AL, Boston, MA, Buffalo, NY, Charlotte, NC, Chicago, IL, Cincinnati, OH, Cleveland, OH, Columbus, OH, Dallas, TX, Denver, CO, Detroit, MI, Fresno, CA, Hartford, CT, Honolulu, HI, Houston, TX, Indianapolis, IN, Jacksonville, FL, Kansas City, MO, Las Vegas, NV, Los Angeles, CA, Louisville, KY, Memphis, TN, Miami, FL, Milwaukee, WI, Minneapolis, MN, Nashville, TN, New Orleans, LA, New York, NY, Oklahoma City, OK, Orlando, FL, Philadelphia, PA, Phoenix, AZ, Pittsburgh, PA, Portland, OR, Providence, RI, Raleigh, NC, Richmond, VA, Riverside, CA, Rochester, NY, Sacramento, CA, Salt Lake City, UT, San Antonio, TX, San Diego, CA San Francisco, CA, San Jose, CA, Seattle, WA, St. Louis, MO, Tampa, FL, Tucson, AZ, Tulsa, OK, Virginia Beach, VA and Washington, DC.

* In order to represent clients in states where the attorneys are not licensed, they must be granted admission pro hac vice or associate with local counsel.