安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
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- United States Patent and Trademark Office
Home page of the United States Patent and Trademark Office's main web site
- Search for patents | USPTO
Find existing patents, published patent applications and other published patent documentation
- Trademarks | USPTO
Find out how to register and maintain a trademark in the U S , apply for an international trademark, and about protecting your registered trademark
- Patents | USPTO
Find out how to apply for and maintain a patent in the U S , and learn about helpful resources
- Patent Public Search | USPTO
A powerful, flexible web-based patent search application that improves the overall patent searching process It includes two user selected interfaces that provide enhanced access to prior art
- About Us | USPTO
The United States Patent and Trademark Office (USPTO) is the federal agency under the Department of Commerce and is responsible for granting U S patents and registering trademarks
- Apply online | USPTO
Apply for a trademark through Trademark Center Pay application-related fees and use the docketing feature to track the status of applications filed through Trademark Center
- Search our trademark database | USPTO
A search you complete before applying for a trademark registration to make sure your trademark is available to register for your particular goods or services, and to make sure that no other trademark conflicts with it
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