Rule 15: Intervention
(a) By Right. A person who participated in the proceedings before the Board may intervene in an appeal before the Court by filing with the Clerk a notice of intervention and serving a copy on all parties not later than 60 days after the date of the Clerk's notice of docketing (see Rule 4(b)(3) (Notice of Docketing)). See also Rule 28(d) (Intervenor's Brief).
(b) With Permission. Any person who did not participate in the proceedings before the Board and who seeks to intervene in an appeal before the Court shall submit for filing with the Clerk a motion for permission to intervene and serve a copy on all parties not later than 60 days after the date of the Clerk's notice of docketing (see Rule 4(b)(3) (Notice of Docketing)). The motion shall contain a concise statement of the interest of the moving person or party and the grounds upon which he or she seeks intervention. See also Rule 28(d) (Intervenor's Brief); Rule 27(b) (Motions-Response or Opposition).
(c) In Extraordinary Circumstances. After the expiration of the time limit set in subsection (a) or (b), intervention will be permitted only on a finding of extraordinary circumstances.
(d) In Petitions for Writ of Mandamus. A person who seeks to
intervene in a petition for writ of mandamus shall submit for filing with the Clerk a motion
for permission to intervene and serve a copy on all parties within a reasonable time after
the date of the Clerk's notice of docketing (See Rule 4(b)(3) (Notice of docketing)).
The motion shall contain a concise statement of the interest of the moving person or party
and the grounds upon which he or she seeks intervention. See also Rule 28(d)
(Intervenor's Brief); Rule 27(b) (Motions-Response or Opposition).
(e) In Class Actions. A potential intervenor in a class action shall submit for filing with the Clerk a motion for permission to intervene and serve a copy on all parties within a reasonable period of time after the date of the notice placed by the Clerk on the Court's website (see Rule 22(f)(1) (Public Notice)). The motion shall contain a concise statement of the interest of the moving person or organization and the grounds upon which intervention is sought.
