WEST LAFAYETTE, Ind.--(BUSINESS WIRE)--Nov. 2, 2005--Endocyte Inc., a Purdue Research Park-based company, today announced that the United States Patent and Trademark Office has issued the company a notice of allowance for a patent encompassing a proprietary treatment method that helps the immune system find and destroy cancer cells. A notice of allowance is a written notification that a patent application has cleared an internal review and is nearing issuance.