; and (iv) stating whether the applicant is aware of any other proceedings before the court concerning the same determination of the Copyright Claims Board. (c) Challenges to the determination (1) Bases for challenge Not later than 90 days after the date on which Copyright Claims Board issues a final or amended final determination in a proceeding, or not later than 90 days after the date on which the Register of Copyrights completes any process of reconsideration or review of the determination, whichever occurs later, a party may seek a court order vacating, modifying, or correcting the determination of the Copyright Claims Board in the following cases: (A) If the determination was issued as a result of fraud, corruption, misrepresentation, or other misconduct. (B) If the Copyright Claims Board exceeded its authority or failed to render a final determination concerning the subject matter at issue. (C) In the case of a default determination or determination based on a failure to prosecute, if it is established that the default or failure was due to excusable neglect. (2) Procedure to challenge (A) Notice of application Notice of the application to challenge a determination of the Copyright Claims Board shall be provided to all parties to the proceeding before the Copyright Claims Board, in accordance with the procedures applicable to service of a motion in the court where the application is made. (B) Staying of proceedings For purposes of an application under this subsection, any judge who is authorized to issue an order to stay the proceedings in an any other action brought in the same court may issue an order, to be served with the notice of application, staying proceedings to enforce the award while the challenge is pending. 1509. Relationship to other district court actions (a) Stay of district court proceedings Subject to section 1507(b), a district court of the United States shall issue a stay of proceedings or such other relief as the court determines appropriate with respect to any claim brought before the