Alan L. Cassel, Esq.


Telephone: (636) 898-6850

Fax: (314) 529-3900



Patent Attorney in Missouri.

Licensed and eligible to practice in Missouri, Georgia, and New York; also nationally by the U.S. Patent and Trademark Office.


Voluntarily not accepting new work or continuing old work due to declining physical health. Retirement may become permanent. In the case of continuing work, please contact your billing attorney for further information.

When emailing, remember the "Patentcastle"