Learn more about the United States Patent and Trademark Office (USPTO) Clean Technology Partnership and Green Technology Pilot Programs. Clean technology includes products and services that improve operational performance, productivity or efficiency while reducing costs, inputs, energy consumption, waste or pollution. Alternative energy sources, water and gas purification and soil remediation, as well as other technologies centered on increasing energy efficiency and non-toxic production incorporate clean technology. This slideshow was presented during the USPTO's first Clean Technology Partnership Meeting (April 27, 2011).