Mark is a litigator whose practice primarily involves commercial and business disputes. He has extensive experience in unfair competition matters, particularly in connection with covenant not to compete, trade secret and employee unfair competition disputes.

Mark has prepared a 50-state survey of the laws regarding noncompetition agreements in the United States, and also assisted in the preparation of a similar compilation covering the United States and several European countries for the TechLaw Group. He has been involved in more than 60 cases involving noncompete/trade secrets disputes; many more noncompete/trade secrets disputes which were resolved without the need for litigation; counseling many “old” employers, former employees and/or “new” employers regarding the enforceability of noncompetition provisions; drafting noncompetition agreements, reviewing the enforceability of noncompetition provisions contained in sale of business agreements; and providing advice and guidance to other attorneys within the firm in connection with noncompete disputes they are handling, including matters being handled in the firm’s other offices.

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+1-314-259-2449

Mark S. Deiermann

Senior Counsel
Bryan Cave Leighton Paisner
St. Louis

Practice Area: Business & Commercial Disputes

WHAT CLIENTS SAY

"We have a long relationship with Mark that goes way back – he has delivered for us numerous times over the years."

MY CLIENT PHILOSOPHY

"In trade secret, noncompete and similar matters, clients often need quick, sound and practical legal advice. This requires identifying the issues and potential issues, understanding and being able to explain the applicable law, and being sensitive to the client’s business needs and business realities. We try to provide clients with the information and advice they need as expeditiously as possible."

– Mark S. Deiermann

ALL-STAR BIOGRAPHY

Mark is a litigator whose practice primarily involves commercial and business disputes. He has extensive experience in unfair competition matters, particularly in connection with covenant not to compete, trade secret and employee unfair competition disputes.

Mark has prepared a 50-state survey of the laws regarding noncompetition agreements in the United States, and also assisted in the preparation of a similar compilation covering the United States and several European countries for the TechLaw Group. He has been involved in more than 60 cases involving noncompete/trade secrets disputes; many more noncompete/trade secrets disputes which were resolved without the need for litigation; counseling many “old” employers, former employees and/or “new” employers regarding the enforceability of noncompetition provisions; drafting noncompetition agreements, reviewing the enforceability of noncompetition provisions contained in sale of business agreements; and providing advice and guidance to other attorneys within the firm in connection with noncompete disputes they are handling, including matters being handled in the firm’s other offices.

Visit All-Star's Firm »

+1-314-259-2449

Mark S. Deiermann

Senior Counsel
Bryan Cave Leighton Paisner
St. Louis

Practice Area: Business & Commercial Disputes

ALL-STAR BIOGRAPHY

Mark is a litigator whose practice primarily involves commercial and business disputes. He has extensive experience in unfair competition matters, particularly in connection with covenant not to compete, trade secret and employee unfair competition disputes.

Mark has prepared a 50-state survey of the laws regarding noncompetition agreements in the United States, and also assisted in the preparation of a similar compilation covering the United States and several European countries for the TechLaw Group. He has been involved in more than 60 cases involving noncompete/trade secrets disputes; many more noncompete/trade secrets disputes which were resolved without the need for litigation; counseling many “old” employers, former employees and/or “new” employers regarding the enforceability of noncompetition provisions; drafting noncompetition agreements, reviewing the enforceability of noncompetition provisions contained in sale of business agreements; and providing advice and guidance to other attorneys within the firm in connection with noncompete disputes they are handling, including matters being handled in the firm’s other offices.

Visit All-Star's Firm »