37 CFR § 2.87 - Dividing an application.
(a) Application may be divided. An application may be divided into two or more separate applications upon the payment of a fee for each new application created and submission by the applicant of a request in accordance with paragraph (d) of this section.
(b) Fee. In the case of a request to divide out one or more entire classes from an application, only the fee for dividing an application as set forth in § 2.6(a)(19) will be required. However, in the case of a request to divide out some, but not all, of the goods or services in a class, the applicant must submit the application filing fee as set forth in § 2.6(a)(1) for each new separate application to be created by the division, in addition to the fee for dividing an application.
(c) Time for filing.
(1) A request to divide an application may be filed at any time between the application filing date and the date on which the trademark examining attorney approves the mark for publication; or during an opposition, concurrent use, or interference proceeding, upon motion granted by the Trademark Trial and Appeal Board.
(2) In an application under section 1(b) of the Act, a request to divide may also be filed with a statement of use under § 2.88 or at any time between the filing of a statement of use and the date on which the trademark examining attorney approves the mark for registration.
(3) In a multiple-basis application, a request to divide out goods or services having a particular basis may also be filed during the period between the issuance of the notice of allowance under section 13(b)(2) of the Act and the filing of a statement of use under § 2.88.
(d) Form. A request to divide an application should be made in a separate document from any other amendment or response in the application. The title “Request to Divide Application” should appear at the top of the first page of the document.
(e) Outstanding time periods apply to newly created applications. Any time period for action by the applicant which is outstanding in the original application at the time of the division will apply to each separate new application created by the division, except as follows:
(1) If an Office action pertaining to less than all the classes in a multiple-class application is outstanding, and the applicant files a request to divide out the goods, services, and/or class(es) to which the Office action does not pertain before the response deadline, a response to the Office action is not due in the new (child) application(s) created by the division of the application;
(2) If an Office action pertaining to less than all the bases in a multiple-basis application is outstanding, and the applicant files a request to divide out the goods/services having the basis or bases to which the Office action does not pertain before the response deadline, a response to the Office action is not due in the new (child) application(s) created by the division of the application; or
(3) In a multiple-basis application in which a notice of allowance has issued, if the applicant files a request to divide out the goods/services having the basis or bases to which the notice of allowance does not pertain before the deadline for filing the statement of use, the new (child) applications created by the division are not affected by the notice of allowance.
(f) Signature. The request to divide must be signed by the applicant, someone with legal authority to bind the applicant (e.g., a corporate officer or general partner of a partnership), or a practitioner who meets the requirements of § 11.14, in accordance with the requirements of § 2.193(e)(2).
(g) Section 66(a) applications - change of ownership with respect to some but not all of the goods or services.
(1) When the International Bureau of the World Intellectual Property Organization notifies the Office that an international registration has been divided as the result of a change of ownership with respect to some but not all of the goods or services, the Office will construe the International Bureau's notice as a request to divide. The Office will record the partial change of ownership in the Assignment Services Branch, and divide out the assigned goods/services from the original (parent) application. The Office will create a new (child) application serial number, and enter the information about the new application in its automated records.
(2) To obtain a certificate of registration in the name of the new owner for the goods/services that have been divided out, the new owner must pay the fee(s) for the request to divide, as required by § 2.6 and paragraph (b) of this section. The examining attorney will issue an Office action in the child application requiring the new owner to pay the required fee(s). If the owner of the child application fails to respond, the child application will be abandoned. It is not necessary for the new owner to file a separate request to divide.