http://hydra.humanities.uci.edu/derrida/pol+fr.html is a summary of Derrida's "Politics of Friendship" by the author himself, presented as a transcript of a 1997 talk. The bottom of the page says "All rights reserved © 1995-2003", which presumably refers to the design aspects of the page, not the content. According to the UK's intellectual property office, "There is no copyright in speech unless and until it is recorded." Since this text was recorded (transcription by Benjamin Noys), it is presumably © Jacques Derrida in the United Kingdom (which is where the talk was delivered). It is therefor unclear how it got onto a UC Irvine (California) webpage... In any case, whether it is used with permission there or not, we do not have permission to do anything with the document, except perhaps read it.
One can compare this case wherein an Argentinian professor made Spanish translations of Derrida's work available, and served with a formal complaint by les Editions de Minuit, leading to legal action. The professor in question says that les Editions de Minuit has no right to speak on behalf of Derrida or his descendents. (This particular article is CC-By-NC-ND, incidentally -- a very non-permissive license, but it at least allows redistribution of the article in question!)
For the record, Derrida himself once said "I feel that two weeks after my death, nothing at all of my work will be left, except what remains in the copyright registration library."<meta charset="utf-8"/> <meta charset="utf-8"/> <meta charset="utf-8"/>