John T Callahan

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 Columbia1990

Education

University of Baltimore, JD, 1990
Catholic University, BChE, 1985

Professional Memberships

District of Columbia Bar

Contact John Callahan

Sughrue Mion

2100 Pennsylvania Avenue NorthWest
Suite 800
Washington, DC 20037   get directions