Searching Derwent

U.S. Patents. This file, produced by Derwent, Inc., covers U.S. patents from 1971 to the present. The database iacludes all bibliographic and front page information and the text of all claims. (Prom 1971 to 1974 the claims from many patents were not available from the United States Patent and Trademark Office (USPTO) source tapes, and therefore are not iacluded.) The complete cl aim text can be searched from 1971 but can be ptinted only from 1982. Tides and patentee names are present ia their original form, aeither expanded nor standardized. There is no enhanced iadexiag. Examiner citations are directly searchable, and USPTO classification is updated when the tapes are received from the Patent Office. 

Derwent Information Ltd. Derwent Information Ltd., previously known as Derwent PubHcations Ltd., changed its name in the 1990s to reflect more accurately the fact that its products go far beyond traditional pubHcations. Derwent provides a wide spectmm of information products and services, many of them relating to patents. Derwent also produces important databases (qv) of nonpatent information from the pharmaceutical and agncultural chemical Hterature. These products and services encompass alerting tools for current awareness, systems for retrospective search and retneval, and means for document deHvery and archiving. 

EPIDOS issues printed and microfiche compilations of its data in addition, its database can be searched on its own computer or on several on-line host systems. In general, EPIDOS provides the most complete patent family information of any service, although Derwent tends to include more information on inteUectual (nonconvention) famUies, whereas the Erench Patent Office s EDOC file on the Questel system includes information on... 

With the advent of on-line searching in the 1970s, the Derwent file was one of the first to go on-line. It had subject retrieval capabiUty by the manual and punch code systems, tide terms, IPC, and broad subject groupings called Derwent classes, whose primary function had been to allocate patents to appropriate segments of the Derwent system. By 1981, abstracts were added to the database, after which abstracts for the entire back-file were added. 

Other Individual Country Databases and Auxiliary Files. The USPatents files on ORBIT, supphed by Derwent, are similar ia their contents to the CLAIMS-Bibliographic files, including all the front page information and the full claims language. These files do not iaclude the two-dimensional stmctures provided by IFI, nor do they have IFI s standardization of assignee names. Citation searching is available at a cost considerably less than that for the portion of the CLAIMS-Citation file that covers the same period. 

The Chinese patent file with its abstracts can be used to supplement WPI, which at this writing has only tides for Chinese patents. JAPIO provides abstracts based ia particular oa pateat claims, and can help to clarify uncertainties with Japanese abstracts from Derwent and/or CA. PATOLIS, ia Japanese, is a unique source of Japanese legal status information (37). EPIDOS staff carry out PATOLIS searches on request for those with sufficient need to search the PATOLIS database, software is available to enable those who cannot read Japanese to extract key data. 

ITPAIS, the Image Technology Patent Information System was developed between 1975—1985 by Eastman Kodak Co., Agfa-Gevaert (Antwerp/Leverkusen), and Fuji Photo Film Co., Ltd., and encompasses selected patents and Hterature references related principally to the chemical aspects of image technology. Search terms used for this table were the same as in the previous edition, and the Derwent patent database was used for the search data presented here. 

See also Derwent Information Ltd. Patent information searches, types of, 78 231—239. See also Infringement patent information searches Patent searches... 

MARKVSH TOPFRAG. Derwent s TOPFRAG family of products is PC -hased software that automates the selection of search codes and strategies. 

WPIM (World Patents Index Markush), produced by Derwent Publications, Ltd., contains the specific and generic structure records for compounds in the patents included in Derwent Sections B (Farmdoc), C (Agdoc), and E (Chemdoc) since 1987. Sources include patents from 29 industrialized countries as well as European and PCT patents and also items from Research Disclosure and International Technology Disclosures. The compound numbers of relevant references found in WPIM can be searched in Derwent s WPI database to retrieve the corresponding bibliographic information. 

Barreca et al screened for non-nucleoside reverse transcriptase inhibitors of HIV-1 by searching the Derwent World Drug Index (WDI) and the Chemicals Available for Purchase (CAP) databases with a Catalyst model generated by LigandScout. A Fit value cutoff of 3.0 and Lipinski filters, followed by docking, led to the selection of three compounds, two of which were commercially available. A search for available close analogues of all three compounds finally led to the purchase of six compounds, of which five were shown to be active. 

Whereas most patent sequences are available in the public domain for use in research and for commercial exdoitation, there is a substantial body that are the subject of patent protection. It is often useful when conducting searches of sequence databases to be aware of the sequences that are patented because this may imply certain restrictions on the use to which these sequences can be put in a commercial context. The commercial repository is maintained by Derwent (Thomson Scientific), which generates the Geneseq database of patented sequences. This is a useful collectionbe-cause it contains a broad historical collection as well as more recent examples, although the terms for a commercial license to use the database may be off-putting to some potential users. There are also patent sections of Gen-Bank/EMBL DNA databases too. but these are of limited value because they contain only more recent sequence data. 

Science Citation Index , ISI ProceedingsSM, Reaction Citation Index, and the Derwent Innovations IndexSM. Science Citation Index is available on STN , where it is called SciSearch. We wiU begin with the older print-versions for chemical searches. 

Organosilicon Patents issued 1953 - 2003. Source Dow Coming Corporation internal collection (1953 - 1973), Derwent World Patent Index search for Si patent families (1974 - present). 

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