Report:Thomson Innovation/Search Syntax/Searchable Datafields/DWPI Fields

Derwent World Patents Index (DWPI) Datafields

The following table contains a list of data fields from the Derwent World Patents Index file that are enabled for searching in Innovation. These data fields are created through manual indexing procedures, and are unique to the DWPI file. The table has been created with information from the Thomson Innovation help file.^[1]

In the table below non-indented headings in the table are the more general search categories, and they encompass all the material in the sub-category fields. The sub-category fields are indented with dots to show their hierarchies: for example, "Abstract-DWPI Novelty (NOV)" is a narrower search field which falls under the general "Abstract-DWPI (ABD)" search option. Selecting one of the indented sub-categories can allow for more targeted searching.

For the most current list of fields in Thomson Innovation (including DWPI fields), see this page in the help files.

Special Features

The codes in the table above which require additional comment or explanation are discussed here. According to the Thomson Innovation help file, you must have a DWPI subscription in order to search DWPI data, but all Thomson Innovation users (even those without DWPI subscriptions) will see DWPI titles along with original titles on their patent records.^[2] Users should therefore take note that Derwent data fields are only viewable/searchable if the user is also a subscriber to the full DWPI package (in other words, if they are a "DWPI Entitled" user), which can cost tens of thousands of dollars a year. When the data is available, however, most of the fields are searchable, and can even be used from the Record View interface to create new results sets by clicking on a Derwent assignee or Manual code, for example. DWPI Chemical and Polymer Indexing are not searchable through Innovation, but the data is displayed.

All Text Fields - DWPI
This field is a sub-category under "All Text Fields," which does not appear in the table above because it encompasses non-DWPI data as well. The following sub fields are also searched when "All Text Fields - DWPI" is searched:^[1]

All Text Fields-DWPI (ALLD)
...Title-DWPI
...Title Terms-DWPI
...Abstract-DWPI
......Abstract-DWPI Novelty
......Abstract-DWPI Detailed Desc
......Abstract-DWPI Activity
......Abstract-DWPI Mechanism
......Abstract-DWPI Use
......Abstract-DWPI Advantage
......Abstract-DWPI Tech Focus
......Abstract-DWPI Drawing Desc
...First Claim-DWPI

DWPI Abstract
Derwent abstracts are written in a series of specially targeted paragraphs. The sub-categories under this data field allow users to search only within a specific portion of the Derwent abstract. For more on the meaning of these sections, see the abstracts section of the DWPI article.

DWPI Accession Number
Each DWPI record is given a unique accession number. As DWPI records contain multiple patent document numbers, this accession number can be used instead of a patent number to accurately retrieve a specific DWPI record. The number consists of a four-digit year and six-digit serial number, representing the year the record was created and the accession number of the record, respectively. Older numbers do not show a hyphen between the year and the serial number.^[1]

Assignee Code-DWPI
The Derwent indexing staff uses patent assignee codes to standardize assignee data in the Derwent World Patents Index. Oftentimes, multiple variations of an entity’s name will appear on their patent documents, so the indexing staff will assign a code to a group of related corporation names, to ensure they can all be retrieved by a single search (e.g. “Philip Morris, Inc. and Philip Morris, Brazil would appear under the same code, “PHIM”.) Multiple variations of the same assignee name will sometimes appear under the DWPI Assignee field, because they are both represented by the same code.

According to the Thomson Innovation help files, users should utilize this field plus a suffix to search for:^[1]

• Assignee Code Standard-DWPI (C suffix permitted but not necessary)
• Assignee Code Non-Standard-DWPI (N)
• Assignee Code Individual-DWPI (I)
• Assignee Code Russian-DWPI (R)

The Assignee Code (when present) is displayed in parentheses following the Assignee/Applicant name on the patent record view as shown in these examples:

• VAUDRIN D C (VAUD-I)
• OSTMA MASCH (OSTM-N)

The help files state that that the following sub fields are no longer available on Thomson Innovation search forms:^[1]

Assignee Code Standard-DWPI (CKC), Assignee Code Non-Standard-DWPI (CKN), Assignee Code Individual-DWPI (CKI), and Assignee Code Russian-DWPI (CKR) are no longer available on Thomson Innovation search forms. The recommended way to search this information is by using the suffixes shown above. Assignee Code Standard-DWPI (CKC), Assignee Code Non-Standard-DWPI (CKN), Assignee Code Individual-DWPI (CKI), and Assignee Code Russian-DWPI (CKR) can, however, still be searched by manually entering them on the Expert search form if desired. If you do use these fields, please note they can only be searched using the 4-character Assignee Code. Searches in these fields using anything other than the 4-character Assignee Code will yield zero results.

For more information, see the assignee codes section of the DWPI article.

DWPI Basic/Equivalent
A DWPI "Basic" is the first patent that is added during the creation of a new DWPI family. This field allows users to search on a given patent number and to retrieve only DWPI records that have that patent as the "basic" family member. Not all patents are DWPI basics, however, and the search will retrieve 0 hits if the patent is not the first family member for any DWPI family.

DWPI Class and Manual Codes
According to the Thomson help file, the DWPI collection categorizes patent documents using two classification systems, DWPI Class and DWPI Manual Codes. DWPI Class is a broad, simple system, whereas DWPI Manual Codes are more detailed and granular. Both DWPI Class and DWPI Manual Codes cover all technologies within 20 subject areas, identified by Section letters A-X which are grouped into three broad categories for Chemistry, Engineering and Electronics. On the record view, both DWPI Class and DWPI Manual Codes have rollovers/tool tips that display definitions of the codes.^[1]

DWPI Manual Codes for Section Q and Sections S-X are available to all DWPI users.^[1]

DWPI Manual Codes for Sections A-N (referred to as the CPI Manual Codes) are only available to DWPI users in organizations holding a separate CPI subscription with Thomson Reuters.^[1]

To learn more about this system, see the manual codes section of the DWPI article.

DWPI Title Terms
Derwent patent family titles are re-written from the original document titles using standardized terminology from a proprietary thesaurus. These terms are known as "title terms," and they are placed within a special field in the Derwent record. According to the Thomson Innovation help file, Title Terms-DWPI are generated automatically by text editing software.^[1] See the titles section of the DWPI article. for more information.

DWPI Update
The Derwent collection is updated frequently, about twice a week. When records are added to the file, they are assigned a unique update code, which consists of a 4-digit year followed by a 2-digit serial code, representing the year and number of the update. Through these codes, it is possible to examine the content of any particular Derwent update batch throughout each year.

DWPI Update (Basic) is only available when you search Enhanced Patent Data - DWPI. The enhanced DWPI record includes family member level data for a few fields (including DWPI Update).^[1]

DWPI Chemical Indexing
The Derwent World Patent Index originated as a pharmaceutical patent alerting file, and as such, the staff’s efforts as early as the 1960s were directed towards indexing chemical structures. Before complex computer search engines were available, indexing was performed using alphanumeric codes to represent chemical fragments, and these codes are still in use in the database today. They can be used to search for specific structures, or generically disclosed ones. The following DWPI Chemical Indexing systems are displayed in Record View for DWPI Entitled users (for records classified in CPI Sections B (Pharmaceuticals), C (Agrochemicals) and/or E (General Chemicals)), but are not currently searchable:^[1]

• DWPI Chemistry Resource Numbers (full coverage from 1999 to date)
• DWPI Registry Numbers (indexed from 1981 to date)
• Chemical Fragment Codes (indexed from 1963 to date)
• DWPI Compound Numbers (indexed from 1987 to date)
• Markush Compound Numbers (indexed from 1987 to date)
• Ring Index Numbers (indexed from 1972 to date)

Search functionality for CPI deep indexing is planned as an enhancement for later releases of Thomson Innovation, according to the Thomson Innovation help file.^[1] The previous implementation of these codes in another end-user search engine, Thomson Reuters’ Delphion, was deemed unsuccessful by some professional searchers.^[3] It is currently unknown how successfully this indexing can be used in Innovation.

DWPI Polymer Codes/DWPI Polymer Indexing
Derwent Polymer Indexing uses a set of complex codes to describe the polymer content of certain patents. Although the following Polymer Indexing systems may be displayed for records classified in CPI Section A (with a subscription to Derwent codes), these codes are not searchable through Innovation:^[1]

• Plasdoc Punch Codes (indexed from 1966-1994)
• Plasdoc Key Serial Codes (indexed from 1978-1994)
• Enhanced Polymer Indexing (indexed from 1993 to date)

Sources

1. ↑ ^{1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12} "Patent Fields (and Tags)." Thomson Innovation website, http://www.thomsoninnovation.com/tip-innovation/support/help/index.htm#patent_fields.htm. Accessed September 11, 2012.
2. ↑ " DWPI (Derwent World Patents Index) on Thomson Innovation." Thomson Innovation website, http://www.thomsoninnovation.com/tip-innovation/support/help/dwpi.htm#overview. Accessed September 12, 2012.
3. ↑ Lambert, Nancy. "Derwent on Delphion: An Experiment." Searcher Magazine, Information Today 9. 5 (2001), http://www.infotoday.com/searcher/may01/lambert.htm. Accessed October 23, 2008.