Patent Lens is a worldwide, open-access, free full-text patent informatics resource. It serves as the cyberinfrastructure platform for the Initiative for Open Innovation. Some interesting features:
Search technology now independent of language; Chinese (中文) PCTs now fully text-searchable. Search for lapsed, abandoned or expired US Patents. Visualize Patent Families with new graphical trees as PDFs. Patent Landscapes on Influenza Genes, Rice Genome and Adjuvants now online. Protein & DNA Sequence searching of over 77 million sequences from worldwide patent collections.
This initiative is from Cambia, founded by Richard Jefforson, Molecular Biologist at FAO.