Callan Pharma Services founders, Dr. Sill and Dr. Sullivan, are each registered United States Patent and Trademark Office Agents with extensive experience in drafting, prosecuting, and strategizing the intellectual property of drug formulations. Callan views each drug formulation or reformulation (e.g., 505(b)(2) pathway) project through the lens of patentability and freedom to operate. A unique strategy of concurrent IP white space analysis and formulation development maximizes the commercial value of a program.