37 CFR § 2.99 - Application to register as concurrent user.
(a) An application for registration as a lawful concurrent user will be examined in the same manner as other applications for registration.
(b) If it appears that the applicant is entitled to have the mark registered, subject to a concurrent use proceeding, the mark will be published in the Official Gazette as provided by § 2.80.
(c) If no opposition is filed, or if all oppositions that are filed are dismissed or withdrawn, the Trademark Trial and Appeal Board will send a notice of institution to the applicant for concurrent use registration (plaintiff) and to each applicant, registrant or user specified as a concurrent user in the application (defendants). The notice for each defendant shall state the name and address of the plaintiff and of the plaintiff's attorney or other authorized representative, if any, together with the serial number and filing date of the application. If a party has provided the Office with an email address, the notice may be transmitted via email.
(1) The Board's notice of institution will include a web link or web address to access the concurrent use application proceeding contained in Office records.
(2) An answer to the notice is not required in the case of an applicant or registrant whose application or registration is acknowledged by the concurrent use applicant in the concurrent use application, but a statement, if desired, may be filed within forty days after the issuance of the notice; in the case of any other party specified as a concurrent user in the application, an answer must be filed within forty days after the issuance of the notice.
(3) If an answer, when required, is not filed, judgment will be entered precluding the defaulting user from claiming any right more extensive than that acknowledged in the application(s) for concurrent use registration, but the burden of proving entitlement to registration(s) will remain with the concurrent use applicant(s).
(e) The applicant for a concurrent use registration has the burden of proving entitlement thereto. If there are two or more applications for concurrent use registration involved in a proceeding, the party whose application has the latest filing date is the junior party. A party whose application has a filing date between the filing dates of the earliest involved application and the latest involved application is a junior party to every party whose involved application has an earlier filing date. If any applications have the same filing date, the application with the latest date of execution will be deemed to have the latest filing date and that applicant will be the junior party. A person specified as an excepted user in a concurrent use application but who has not filed an application shall be considered a party senior to every party that has an application involved in the proceeding.
(f) When a concurrent use registration is sought on the basis that a court of competent jurisdiction has finally determined that the parties are entitled to use the same or similar marks in commerce, a concurrent use registration proceeding will not be instituted if all of the following conditions are fulfilled:
(1) The applicant is entitled to registration subject only to the concurrent lawful use of a party to the court proceeding; and
(2) The court decree specifies the rights of the parties; and
(3) A true copy of the court decree is submitted to the examining attorney; and
(4) The concurrent use application complies fully and exactly with the court decree; and
(5) The excepted use specified in the concurrent use application does not involve a registration, or any involved registration has been restricted by the Director in accordance with the court decree.
(g) Registrations and applications to register on the Supplemental Register and registrations under the Act of 1920 are not subject to concurrent use registration proceedings. Applications under section 1(b) of the Act of 1946 are subject to concurrent use registration proceedings only after the applicant files an acceptable allegation of use under § 2.76 or § 2.88. Applications based solely on section 44 or section 66(a) of the Act are not subject to concurrent use registration proceedings.
(h) The Trademark Trial and Appeal Board will consider and determine concurrent use rights only in the context of a concurrent use registration proceeding.
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