John Callahan
Attorney in Washington, DC with 35 years experience
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About John T Callahan
John T Callahan practices intellectual property law in Washington, DC, at Sughrue Mion. John is a member of the District of Columbia bar with 35 years of legal experience.
Practice Areas
| Intellectual Property Law |
License
| State | Year |
|---|---|
| District of Columbia | 1990 |
Education
| University of Baltimore, JD, 1990 |
| Catholic University, BChE, 1985 |
Professional Memberships
| District of Columbia Bar |
Contact John Callahan
2100 Pennsylvania Avenue NorthWest
Suite 800
Washington, DC 20037 get directions
