"to act sua sponte"
Explanation courtesy of Wikipedia:
In law, the term sua sponte (Latin "on its own will or motion.") means to act spontaneously without prompting from another party. The term is usually applied to actions by a judge taken without a prior motion or request from the parties. The plural form nostra sponte is sometimes used when the action is taken by a multi-member court, such as an appellate court, rather than a single judge.

Reorganizations under chapter 11 of the Bankruptcy Code - Resultado de la Búsqueda de libros de Google
de Richard F. Broude - 1986 - Business & Economics
Nevertheless, and although it may be tilting at windmills, it is not clear that the court would have the power to act sua sponte in every situation. ...
books.google.com.ar/books?isbn=158852034X... -
Matter of G-D-: BIA Will Reconsider Cases on Its Own Motion ... - [ Traducir esta página ]
In order to act sua sponte, the BIA "must be persuaded that the respondent's situation is truly exceptional." The majority acknowledged that in Matter of ...
www.nilc.org/immlawpolicy/.../removpsds043.htm - En caché - Similares -
Use of Rule 60(b) to Vacate Federal Denaturalization Decree ... - [ Traducir esta página ]
such power, to permit the court to act sua sponte would be in accord with the policy of construing the Federal Rules liberally to facilitate relief. ...
www.jstor.org/stable/1226707 -