US Patent 9,354,181, Analytical devices for detection of low-quality pharmaceuticals, was issued May 31, 2016, to Toni Barstis, Patrick Flynn, and Marya Lieberman.  

Toni, Pat, and Marya are grateful to Allan Fanucci at Winstrom & Strawn LLP, who acted for us and provided most valuable guidance through the patent maze, and to Karen Deak at Notre Dame who helped us understand the process.  

The invention relates to user-friendly analytical devices, in particular, Paper Analytical Devices (PADs), for detection of at least two chemical components indicative of a low quality pharmaceutical product, and method of use thereof.