Stimulating Innovation through Procurement Act of 2019 This bill provides assistance to small businesses participating in the Small Business Innovation Research (SBIR) Program or the Small Business Technology Transfer (STTR) Program. Specifically, the bill requires the Small Business Administration (SBA) to coordinate with the senior procurement executives of federal agencies participating in SBIR or STTR programs to assist small businesses participating in such programs with commercializing research before the business is awarded a federal contract, the SBA to modify its policy directives to require procurement center representatives to assist small businesses participating in SBIR or STTR programs with researching solicitations for federal contracts and submitting bids, and each Office of Small and Disadvantaged Business Utilization to assist small businesses participating in SBIR or STTR programs with researching solicitations for federal contracts and submitting bids.