The United States Patent and Trademark Office (USPTO) intends to modify its contract # DOC50PAPT0501035 for Expert Advice & Assistance with F.M. Michalkewicz to increase the contract ceiling by $500,000. It is necessary to increase the ceiling to accommodate an unexpected increase in current requirements within the general scope of the contract. The Government has determined that a new competitive solicitation at this time would incur substantial duplication of costs during a lengthy transition period that would not be recovered through competition. The Government has also determined that a lengthy transition at this time would cause delivery delays and jeopardize program execution. This notice of intent is not a request for competitive proposals.