(a) Each notice listed in paragraph (b) of this section must be filed with the Board:

1. (1) By the petitioner, as part of the petition;
2. (2) By the patent owner, or applicant in the case of derivation, within 21 days of service of the petition; or
3. (3) By either party, within 21 days of a change of the information listed in paragraph (b) of this section stated in an earlier paper.

(b) Each of the following notices must be filed:

1. (1) Real party-in-interest. Identify each real party-in-interest for the party.
2. (2) Related matters. Identify any other judicial or administrative matter that would affect, or be affected by, a decision in the proceeding.
3. (3) Lead and back-up counsel. If the party is represented by counsel, then counsel must be identified.

4. (4) Service information. Identify (if applicable):

   1. (i) An electronic mail address;
   2. (ii) A postal mailing address;
   3. (iii) A hand-delivery address, if different than the postal mailing address;
   4. (iv) A telephone number; and
   5. (v) A facsimile number.