The Signature service allows Trade Mark and Intellectual Property professionals to search both UK trade marks and all UK company names. Together with the European trade mark database, this provides a comprehensive prior art search service for names that are legally valid in the UK. The data comes from the following source.

• European Trade Marks	Over 45,000 European Community trade marks, many with colour images. The database also includes all UK trade marks.
data supplier	Office for Harmonization in the Internal Market (Trade Marks and Designs), Alicante, Spain.
update frequency	Monthly for European marks.
key searchable fields	Trade mark Device classification (Vienna) Goods specification and description, plus many more.
• UK Trade Marks	Over 800,000 trade marks with images. Lapsed marks since 1976 are also included on the database. The database also includes all European marks.
data supplier	The UK Patent Office.
update frequency	Weekly for UK marks.
key searchable fields	Trade mark Device classification (Vienna) Goods specification and description, plus many more.
• UK Companies	Over 3,000,000 UK company names for all live companies, and companies dissolved since 1964.
data supplier	The UK Companies Registry and Jordans Ltd.
update frequency	No longer updated. Last update was on 12/09/02.
key searchable fields	Company name Registered office Date of Incorporation, plus many more.