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About me

My colleagues and I are BUSINESS lawyers ... business lawyers who focus upon INTELLECTUAL PROPERTY.   Perfecting intellectual property rights without careful regard for the business purpose they are to serve is both expensive and wasteful.  Planning is our hallmark and we strive to serve our clients as faithful and expert counsellors, not just diligent workers.  We handle every aspect of every technology everywhere in the world.  We plan, counsel, execute, monitor, license, manage and enforce intellectual property rights for our clients.  We also handle ancillary matters such as those dealing with standards organizations, indemnifications, regulatory body matters.  In short, we do it all within our sphere of expertise.


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425908 1319259665

Practice areas


  1. Patent Application: 40%
  2. Global IP business planning: 35%
  3. Litigation avoidance and positioning: 15%
  4. Copyright Application: 5%
  5. Trademark Application: 5%


Payment types:

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Attorney endorsements

3 total 

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  • Ronald Lee Burdge

    I endorse this lawyer. With several hundred published answers to consumer questions and several extremely well written Avvo Legal Guides, and recommendations from other attorneys, it is easy to see that attorney Caldwell is extraordinarily bright in the field of copyright law - I especially like his "Chicken Soup" tips on copyright law. If you have an intellectual property question and his office is anywhere near you, then he is your answer. I highly recommend him to you.


    Ronald Burdge Lemon Law Attorney
    Relationship: Fellow lawyer in community

  • Christian K. Lassen II

    I endorse this lawyer.


    Christian Lassen Personal Injury Attorney
    Relationship: Fellow lawyer in community

Contact info

Baker Hostetler LLP

2929 Arch St. 12th Floor
Cira Center
Philadelphia, PA, 19104


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Annual Service AwardPhiladelphia Volunteer Lawyers for the Arts1999
Work experience
TitleCompany nameDuration
PartnerWoodcock Washburn Kurtz Mackiewicz & Norris1978 - 2005
Association namePosition nameDuration
Philadelphia Intellectual Property Law Assoc.President, V.P. Board Member, TreasurerN/A
Benjamin Franklin American Inn of CourtFounding MemberN/A
Copyright Society of the USABoard MemberN/A
Philadelphia Volunteer Lawyers for the ArtsBoard MemberN/A
American Intellectual Property Law Assoc.N/AN/A
International Trademark AssociationN/AN/A
Legal cases
Case nameOutcome
Therasense, Inc. v. Becton, Dickinson and Company (Fed. Cir. 2011)Application of the law of inequitable conduct was greatly limited.
See all legal cases 
Publication nameTitleDate
Philadelphia Volunteer Lawyers for the ArtsArtists' Guide to Copyright Patent and Trademark Law2004
School nameMajorDegreeGraduated
Villanova University School of LawLawJD - Juris Doctor1978
Johns Hopkins UniversityN/AMA - Masters1973
Rice UniversityN/ABA - Bachelor of Arts1971
Speaking engagements
Conference nameTitleDate
US and InternationalFrequent Speaker at business, technology and I.P. conferencesN/A