Retrieving patent and other Intellectual Property (IP) documents is quite critical in various areas including science and technology, marketing, intellectual property right management, business and so on. In the past, much of the focus for patent and IP retrieval has been from the database community, and not from the Information Retrieval (IR) community. It is partly because the research and development in IR has tended to place emphasis on the generalized systems, which are effective for any kinds of documents and any kinds of queries. It is partly because the text genre of the patents has highly specific characteristics both in semantics and syntax of the text and has highly specialized ways of use by professional users. We assumed that this is the right time to organize a workshop since supporting technology for specialized retrieval is ready.