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David Earnshaw Crawford

David Earnshaw Crawford

Practice areas:

Intellectual Property, Patent Application, Patent Infringement, Licensing, Trademark Application, Copyright Application, Copyright Infringement, Trademark Infringement

Client reviews

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About Me

Areas of focus: Patent preparation and prosecution related to medical devices and mechanical technologies, counseling, licensing and enforcement; due diligence studies; and opinions regarding infringement, validity and enforceability of patents.  Mr. Crawford has extensive experience preparing and prosecuting patent applications in a wide variety of arts. He conducts freedom-to-operate, infringement and validity studies, prepares and negotiates licenses and other agreements, and prosecutes trademark and copyright applications.


Practice Areas

Licensed since 1993

  1. Intellectual Property: 37%
    22 years, 500 cases
  2. Patent Application: 36%
    22 years, 450 cases
  3. Patent Infringement: 15%
    22 years
  4. Licensing: 5%
    22 years
  5. Other: 7%
  6. More 

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

100 N. Broadway #1700
St. Louis, MO, 63102-2709



MOGood Standing, Active199401/08/2013

Professional Misconduct

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

Avvo Contributions

Legal Answers


Award NameGrantorDate Granted
Golden Anniversary FellowSt Louis Bar Foundation2006
Distinguished FellowSt Louis Bar Foundation2001
Law ReviewSalmon P Chase College of Law1992
Ravencraft AwardSalmon P Chase College of Law1991
Tau Beta PiThe Ohio State University1982
Pi Tau SigmaThe Ohio State University1981
TexnikoiThe Ohio State University1981

Work Experience

TitleCompany NameDuration
PartnerSenniger Powers LLP2008 - Present
PartnerSonnenschein Nath & Rosenthal2003 - 2008
PartnerSenniger Powers Leavitt & Roedel1995 - 2003
AssociateRogers Howell & Haferkamp1993 - 1995


Association NamePosition NameDuration
National Conference of Bar PresidentsExecutive Council2009 - 2011
Bar Association of Metropolitan St. LouisPresident2008 - 2009
Metropolitan Bar CaucusExecutive Committee2008 - 2011
St Louis Bar FoundationDirector2007 - 2011
Rotary Club of Des PeresPresident2002 - 2003
American Society of Mechanical EngineersSt Louis Section Chair2000 - 2001
Engineers Club of St LouisDirector1997 - 1999
American Bar AssociationMember1995 - Present


Publication NameTitleDate
Saint Louis LawyerBAMSL Year an Unconditional Success2009
St. Louis Bar JournalDear Young Lawyer2009
Saint Louis LawyerBAMSL Helping in Economic Crises2009
Saint Louis LawyerJustice Sandra Day O'Connor,2009
Saint Louis LawyerBAMSL Staying at Home2009
St. Louis Bar JournalAn Historical Perspective2009
Saint Louis LawyerOur Two Annual Holiday Parties2008
Saint Louis LawyerPursuing Fiscal Responsibility2008
Saint Louis LawyerIntroducing Two New Valuable Member Benefits2008
St. Louis Bar JournalLawyer Addiction and Depression2008
St. Louis Bar JournalGreening of the Law2008
Saint Louis LawyerThe First 100 Days or So2008
Saint Louis LawyerHe's Not a Real Lawyer; He's a Patent Lawyer2008
Saint Louis LawyerRule of Law2008
Saint Louis LawyerPro Bono2008
Saint Louis LawyerUnity and Inclusiveness2008
St. Louis Bar JournalProtecting Trademarks and Copyrights on the Internet1997


School NameMajorDegreeGraduated
Northern Kentucky UniversityLawJuris Doctor1993
University of CincinnatiEngineeringMaster of Science1987
The Ohio State UniversityMechanical EngineeringBachelor of Science1983