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Centenary College of Louisiana,
B.S. Chemistry 1957 Louisiana State University, J.D. 1964
The National Mediation Academy, 1998

Technical Specialties/Experience:

Extensive practice in the fields of patent, trademark, copyright, trade secret and unfair competition, including civil litigation concerning protection of intellectual properties; patent and technology licensing involving a wide range of technical subject matter. Expert testimony in areas of intellectual property damages, including reasonable royalties, patent and trademark issues, copyrights and licensing. Certified mediator.

Registered to represent clients before the U.S. Patent and Trademark Office (No. 22,600).

Professional Experience:

A. Dry & Tassin, P.L.L.C B Shareholder (January 1, 1996 - March 2008), Houston, Texas. First chair litigation in all areas of intellectual property. Extensive licensing practice in all relevant areas, as well as expert testimony in the area of damages, reasonable royalties, acquisition and protection of intellectual property, and licensing matters. Extensive trademark consultation for major consumer goods companies. Mediation in areas of intellectual property disputes and commercial litigation.

Winstead Sechrest & Minick, P.C. B Shareholder (1994 - 1995), Houston, Texas. First chair litigation in all areas of intellectual property. Extensive licensing practice in all relevant areas, as well as expert testimony in the area of damages, reasonable royalties, and licensing matters. Extensive trademark consultation for major consumer goods companies.

Adjunct Professor (1989 - 1994)
The University Of Houston School Of Law, Houston, Texas
Course: International Technology Transfer/Licensing

Pravel, Hewitt, Kimball & Krieger B Shareholder (1981 - 1993), Houston, Texas. Extensive first chair litigation practice involving patents, trademarks, antitrust, unfair competition, civil RICO, Texas Deceptive Trade Practice, Consumer Protection Act (technology related), employment contracts, trade secrets and licensing matters. In addition, served as consultant to major corporations relative to technology transfer matters. Example license programs created for clients included: (1) assisted process optimization systems; (2) application specific integrated circuits [ASIC]; and (3) refrigeration control systems. Extensive solicitation of trademark rights, and protection of those rights for major U.S. corporations.

Vinson & Elkins B Senior Associate (1977 - 1981), Houston, Texas. Patent solicitation in the area of petroleum production, oil field equipment, medical equipment and prosthetic devices, and all chemicals and chemical processes in the Intellectual Property Section. Solicitation included patent preparation, prosecution, interferences, licensing in and out, and litigation involving patents, trademarks, unfair competition and related claims.

F. Johnson & Dry B Partner (Jan. - Oct. 1977), Houston, Texas. Our services included patent solicitation, licensing and litigation in Texas and Louisiana. Efforts were primarily in the area of licensing, contracts and patents and trademark solicitation, including litigation in the areas of environmental and civil causes.

G. Petro-Tex Chemical Corporation B Patent Counsel and Assistant Secretary (Jan. 1974 - Dec. 1976), Houston, Texas. Responsible for all corporate patent and trademark matters, which included the screening of research matters, drafting patent applications, directing the work of others in the preparation and prosecution of patent applications, maintaining corporate patent and trademark assets world-wide, handling negotiations for and drafting licenses for the sale or purchase of chemical process technology on a world-wide basis, including the Eastern Bloc countries. Also advised management on the infringement problems arising from the use of our technology by others, and vice versa. Responsible for legal matters arising from environmental and OSHA matters within the company.

Exxon Research and Engineering Company B Senior Patent Attorney (Aug. 1968 - Jan. 1974), Linden, New Jersey. Senior patent attorney having patent and licensing responsibility in the general field of polymers, petroleum processing and catalysts. Patent duties comprised application preparation, prosecution, validity and infringement studies, as well as extensive interference practice. Licensing duties involving the negotiation for sale and acquisition of technology and patent matters in a broad variety of subject matter areas on a world-wide basis. Supplied license support for Exxon's Technology Sales Division and served on the company's Licenses Advisory Committee. Involved in the preparation and support of litigation (by outside counsel) involving patents in assigned areas of technology.

I. Ethyl Corporation B Patent Attorney (June 1966 - Aug. 1968), Baton Rouge, Louisiana. Patent attorney having responsibility for patent solicitation in the general fields of polymers and certain organometallics and metal hydrides. Primary duties included patent application preparation and prosecution, validity and infringement studies, some license work, interferences, and product market evaluation assistance to Commercial Development personnel.

The Dow Chemical Company B Patent Attorney (June 1964 - June 1966), Midland, Michigan. Patent attorney having essentially the same duties with regard to patents and licensing as at Ethyl Corporation, above.

Professional Data and Activities:

  • Licensing Executives Society (U.S.A. and Canada) (Trustee, 1992 - 1994); (Chairman, Seminar Committee, 1990 -    1992; Co-chair 1999-2000)
  • State Bar of Louisiana
  • Louisiana Bar Foundation
  • Texas Bar Association (Litigation and Intellectual Property Law Sections)
  • Bar Association of the Fifth Circuit Courts of Appeal
  • U.S. Supreme Court (1971) and various Texas, Louisiana and Mississippi Federal Courts, including the Court of Appeals (4th, 5th, 11th and Federal Circuits)
  • Houston Bar Association
  • Houston Intellectual Property Law Association
  • Author and lecturer in the area of litigation, and licensing patent and technology rights.

Technical Employment:

A. Continental Oil Company - Ponca City, Oklahoma. Research chemist at R"D Laboratories, working in the field of high-temperature fluids, antioxidants, fuels, greases and lubricants for high-temperature and radiation resistance. 1957-1958.

B. 1st Lt., U.S. Army Chemical Corps School - Ft. McClellan, Alabama. Laboratory Officer in Charge of Chemical Warfare Laboratory. Trained Army laboratory technicians for assignment to Army chemical laboratories. Supervised four graduate chemists in support of Post Chemical Services in Chemical Warfare training. Instructor in chemistry and chemical warfare agents. 1958-1960.


Born December 21, 1934 in Mansfield, Louisiana Married, 5 children, 17 grandchildren
Dry & Tassin PLLC
P.O. Box 421479
Houston Texas, 77242-1479


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