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• Unauthorized practice at PTO—608–608.02
• Undeliverable correspondence, returned as—403
• Unintentional delay
  • petition based on—1714.01(e)–1714.01(f)(ii)
  • statement of—1714.01(e)
  • where unintentional delay applies—1714.01(f)–1714.01(f)(ii)
• United States Patent and Trademark Office
  • reorganization of—1701
  • Website—102;104;108.01;109.01
• Unity of control—714.05(d);715.03(b);1201.07–1201.07(b)(iv)
• Universal symbols—1202.17–1202.17(e)(vi)
• Unpublished decisions—705.05
• Unscheduled closing of USPTO—309
• Unsigned response to Office action—712.02
• Uruguay Round Agreements—1210.08;Appendix B
• U.S. Postal Service, interruptions of—305.04
• Use dates (See Dates of use)
• Use in commerce
  • assertion of—901
  • bona fide use in the ordinary course of trade—901.02
  • certification marks—1306.02(a)(i)
  • collective membership marks—1304.02(a)(i)
  • collective trademarks and service marks—1303.01(a)(i)
  • commerce that may be lawfully regulated by Congress—901.03
  • date of first—903.02
  • definition of—901.01
  • not required in §44 application—901;1009
  • not required in §66(a) application—901;1904.01(d)
  • service marks—1301.03–1301.03(b)
  • solely by related company—903.05;1201.03(a)
• Use of mark
  • as a mark—1202;1301;1303;1304.01;1306.01
  • bona fide use in the ordinary course of trade—901.02
  • by applicant—1201.01
  • by licensee—1201.03(e)
  • by predecessor in title—903.05
  • by related company—903.05;1201.03–1201.03(e)
  • in commerce (See Use in commerce)
  • solely as a trade name—1202.01
  • solely by related company—1201.03(a)

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