Do it yourself Internet Research Resources
Free Trademark Research Resources:
Notes: With the above you get what you pay for. All of the search engines work differently. This requires hours of reading each help file to ensure accurate results if searching more than one authority.
When conducting a trademark search, it is important to search each state database for conflicting trademarks.. The individual state databases will be listed in the future. All fee based systems have all 50 states available for searching. Only three have proprietary state databases. They are Thomson, CCH/Corsearch and www.Trademark.com.
Fee Based Trademark Research Resources:
Note: Using one of the above will provide you with an interface that provides consistent searching across all authorities. Fees vary. Check the pricing of each to determine the right one for your needs.
Free Copyright Research Resources:
Fee Based Copyright Research Resources:
Offline Trademark Research Services
Note: Contact each vendor for features and pricing. The fee based links are to leading providers of trademark and/or copyright information. Thomson and CCH/Corsearch are not generally "entrepreneur" friendly, while NameProtect and www.Trademark.com is. Government Liaison is at times.