1. USPTO Trademarks Main Page
   URL: https://www.uspto.gov/trademarks
   Overview of the trademark process and access to trademark resources, applications, and information.
2. Trademark Electronic Search System (TESS)
   URL: https://www.uspto.gov/trademarks-application-process/search-trademark-databaseSearch the USPTO’s database for registered trademarks and pending applications.
3. Trademark Electronic Application System (TEAS)
   URL: https://teas.uspto.gov
   File your trademark application electronically with the USPTO.
4. Trademark Status & Document Retrieval (TSDR)
   URL: https://tsdr.uspto.gov
   Retrieve status information and documents for pending applications and registered trademarks.
5. Trademark Trial and Appeal Board (TTAB)
   URL: https://www.uspto.gov/trademarks-application-process/trademark-trial-and-appeal-board-ttab
   Resources for trademark disputes, including opposition and cancellation proceedings.
6. Trademark Fee Information
   URL: https://www.uspto.gov/learning-and-resources/fees-and-payment/uspto-fee-schedule#Trademark%20Fees
   A detailed list of fees related to trademark filings at the USPTO.
7. Basic Facts About Trademarks
   URL: https://www.uspto.gov/sites/default/files/BasicFacts_1.pdf
   A downloadable guide providing an introduction to trademarks and the registration process.
8. Madrid Protocol for International Trademark Registration
   URL: https://www.uspto.gov/ip-policy/international-protection/madrid-protocol
   Learn about filing trademarks internationally through the Madrid Protocol.
9. USPTO Trademark Videos
   URL: https://www.uspto.gov/trademarks/trademark-videos
   A series of educational videos about trademarks and the registration process.

Additional Resources

1. World Intellectual Property Organization (WIPO) – Trademarks
   URL: https://www.wipo.int/trademarks/en/
   Global trademark services, including filing through the Madrid System and international IP law.
2. International Trademark Association (INTA) – Trademark Basics
   URL: https://www.inta.org/
   Educational resources on trademark law, designed for brand owners and legal professionals.
3. United States Small Business Administration (SBA) – Intellectual Property: Patents, Trademarks, and Copyrights
   URL: https://www.sba.com/legal/trademark/
   An overview of intellectual property for small businesses, including trademarks.
4. Justia Trademarks – Trademark Overview and Legal Resources
   URL: https://www.justia.com/intellectual-property/trademarks/
   Legal articles and resources on trademark law, including how-to guides and case law.
5. Library of Congress – Trademarks Research Guide
   URL: https://guides.loc.gov/this-month-in-business-history/july/passage-lanham-act-trademarks
   A research guide from the Library of Congress, offering links to resources on trademark law.

Alt Legal Resources

1. Alt Legal Resource Library
   URL:https://www.altlegal.com/alt-legal-resource-library/
   A collection of webinars, articles, and tools for trademark and intellectual property professionals.
2. Alt Legal IP Resources
   URL:https://www.altlegal.com/ip-resources/
   A curated list of practical IP resources and websites to support day-to-day trademark practice.
3. Alt Legal International Trademark Law Resources
   URL: https://www.altlegal.com/international-resources/
   International trademark resources including blog articles, webinars, and guides for global filings.

International Trademark Resources

1. WIPO (World Intellectual Property Organization)
   URL:https://www.wipo.int
   Global forum for IP services, policy, and cooperation with 193 member states.
2. European Union Intellectual Property Office (EUIPO)
   URL:https://euipo.europa.eu
   Manages EU trademarks and designs, and provides resources for IP protection in the EU.
3. UK Intellectual Property Office (UK IPO)
   URL:https://www.gov.uk
   The UK’s government office responsible for IP registration, including trademarks.
4. Canadian Intellectual Property Office (CIPO)
   URL:https://www.ic.gc.ca
   Information on trademark registration and protection in Canada.
5. The World Bank – Trademark Applications by Country
   URL:https://data.worldbank.org
   Data on trademark applications filed globally, monitored by The World Bank.