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David W. Harlan

David W. Harlan

Practice areas:

Antitrust & Trade Law, Litigation, Intellectual Property, Commercial

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About Me

Mr. Harlan is a trial and appellate attorney with extensive experience in the federal and state courts. He has brought and defended civil actions on behalf of entities and individuals in a broad range of business disputes involving, for example, patent infringement, trademark infringement, control disputes, breaches of contract, fraud and breach of fiduciary duty, RICO, lender's liability, insurance coverage and employment issues. He also has counseled clients and litigated matters involving issues of antitrust law, including representation of a manufacturing company in a 56-day jury trial in which, as lead trial counsel, he secured a $105 million judgment.  He also served as First Assistant U.S. Attorney of St. Louis and was responsible for prosecution of major federal criminal cases. Capitalizing on this experience, Mr. Harlan has defended corporations, their officers and employees from criminal charges involving business matters such as price fixing, environmental pollution, government program fraud, mail fraud, false statements and other business-related criminal charges.


Practice Areas

Licensed since 1967

  1. Commercial: 25%
  2. Intellectual Property: 25%
  3. Litigation: 25%
  4. Antitrust & Trade Law: 25%

Attorney Endorsements

1 total 

  • Marshall Ross Hoekel

    I endorse this lawyer's work.


    Marshall Hoekel Personal Injury Attorney
    Relationship: Fellow lawyer in community

Contact Info

Armstrong Teasdale

7700 Forsyth Boulevard.
Suite. 1800
Saint Louis, MO, 63105



MOGood Standing, Active196701/08/2013

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.

Avvo Contributions

Legal Answers


Award NameGrantorDate Granted
Best Lawyers in AmericaBest Lawyers in America2011
Missouri & Kansas Super LawyersSuper Lawyers2010
Missouri & Kansas Super LawyerSuper Lawyers2009
AV Preeminent Peer Review RatingMartindale-HubbellN/A

Work Experience

TitleCompany NameDuration
PartnerSenniger Powers LLP2000 - Present


Association NamePosition NameDuration
Bar Association of Metropolitan St. LouisN/AN/A
Missouri BarN/AN/A
American Bar AssociationN/AN/A


Publication NameTitleDate
Price Waterhouse General Counsel ForumPreparing Your CEO for Testimony1997
Webster UniversityFederal Sentencing Guidelines for Organizations1993
Antitrust Issues in Healthcare TodayThreshold Antitrust Issues in Peer Review Litigation1992


School NameMajorDegreeGraduated
Saint Louis University School of LawLawJD - Juris Doctor1967
Saint Louis UniversityN/ABA - Bachelor of Arts1964

Speaking Engagements

Conference NameTitleDate
Antitrust Committee (panelist)Antitrust 2001: A Morning with the Department of Justice, Federal Trade Commission and Missouri Attorney General's Office2001
Sentencing Symposium (panelist)Is "Relevant Conduct" Relevant? Reconsidering the Guidelines Approach to Real Offense Sentencing2000