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https://www.uspto.gov/web/offices/pac/mpep/s510.html#:~:text=The%20U.S.%20Patent%20and%20Trademark%20Office%20%28USPTO%20or,excluding%20federal%20holidays%20in%20the%20District%20of%20Columbia.
https://www.uspto.gov/about-us/contact-us
800-877-8339. For general information, mailing addresses, Internet addresses, USPTO.gov accounts, how to use the online fee payment management system and contact information for other USPTO services. General Support is available Monday through Friday from 8:30 a.m. to 8 p.m. ET (except federal holidays).
File a patent application online with EFS-web. Patent Center. Try the beta replacement for EFS-Web, Private PAIR and Public PAIR. Check application status. Check patent application status with public PAIR and private PAIR. Fees and payment. Pay maintenance fees and learn more about filing fees and other payments. Patent Trial & Appeal Board
https://www.epo.org/service-support/contact-us.html
Opening hours: Mo. - Fr. 08:00 hrs to 17:00 hrs Outside opening hours, please call +49 (0) 693 807 917 66
https://instr.iastate.libguides.com/patents/USsearch
If you know the patent number:. In many ways the patent number is the magic key to the patent information system. Regardless of when or where the patent was issued, if you know the patent number, you can nearly always quickly pull up the full-text patent using free tools that are available online.
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