Log In

Michael Henry Shanahan Edit Profile

Michael Henry Shanahan, American lawyer. Bar: United States Patent Office 66, New York 67, Washington 68. Member of American Bar Association, American Intellectual Property Law Association.


Shanahan, Michael Henry was born on January 15, 1939 in Sioux City, Iowa, United States. Son of James Marcus and Rosella (Bernard) Shanahan.


University of Washington (Bachelor of Science in Electrical Engineering, 1962). Brooklyn Law School (Juris Doctor, 1966).


Worked at Banner & Witcoff, Ltd. (Boston, MA) specializing in Federal Trial and Appellate Practice in Intellectual Property Law. Patent, Trademark, Copyright, International Trade, Unfair Competition, Trade Secret and Antitrust Causes before Federal and State Courts and Administrative Agencies.

Admitted to the bar, 1967, New York. 1990, Massachusetts; registered to practice before United States. Patent and Trademark Office.

Member: Massachusetts Bar Association. Boston Patent Law Association. Banner & Allegretti, Ltd. was organized in 1995 as a result of the merger of Allegretti & Witcoff, Ltd.

(founded in 1920) and Banner, Birch, McKie & Beckett (founded in 1960). The firm, which has offices in Boston, Chicago and Washington, is dedicated to the practice of intellectual property law. The firm provides legal representation in obtaining, commercializing and litigating intellectual property rights in the United States and abroad.

The practice includes counseling on the availability, validity and enforcement of intellectual property rights. Patent interference proceedings. Trademark opposition and cancellation proceedings.

Domestic and foreign patent and trademark prosecution. Custom seizures of infringing products. And litigating patent, trademark and copyright infringement cases.

Firm members have experience in both jury and bench trials in the Federal Courts, in proceedings before the International Trade Commission, and practice in all technologies, including the electrical, mechanical and chemical arts as well as computer hardware and software and biotechnology.


Member of American Bar Association, American Intellectual Property Law Association.


Married Barbara Clair Vito, June 15, 1968. Children: Sara Jane, Emily Clair.