M Casique Apr 29, 2011:

Question Clarification. I think I confused the question by using complaint. I mean is the filing of any pleading in a case-complaint, answer, motion, etc. A more specific example is if I were to want to translate "you need to file your opposition at the filing office". Normally, I would hear it interpreted as "necesita archivar su oposicion en la oficina de archivos". It doesn't seem right to me. Would you not say, "necesita REGISTRAR su oposicon....(or presentar, entablar, etc. rather than "archivar")? Sorry to ask again. Thanks in advance for your responses. M.Casique

mediamatrix (X) Apr 28, 2011:

@Asker I have never seen or heard the expression "file in a complaint".

"file a complaint" (without 'in') is (as per the answers so far): 'demandar' or 'presentar/entablar/interponer una demanda' (or other standard expressions, depending on the country; eg: in Chile the usual expression is ingresar una demanda).

But 'file IN a complaint' is ... meaningless.

If you're sure that's the expression, please provide an example in context (= full sentence or paragraph).