One blogger has published a picture of an advertisement poster paid by "AT&T Intellectual Property" sponsoring the Democratic National Convention in Denver of last week:

(If the image above that someone hosted on flickr is gone, AT&T IP succeeded to censor the net)
AT&T patent perpetrator is trying to censor a blogger about their "pursuit of more patents".
- kid bitzer Says:
September 1st, 2008 at 8:41 am
mr. yglesias:
please contact our legal office immediately.
your use of that photograph without prior authorization from at&t is a violation of copyright and also infringes on several proprietary trademarks.
unless you immediately remove it from your website, at&t will have no option but to seek legal remedies.
Flickr has also more higher resolutions of the picture, showing that the company behind the poster is not AT&T, but well "AT&T Intellectual Property", which is probably a Non-Producing Entity full of patent attorneys and patent perpetrators. Someone is commenting and asking what kind of products "AT&T Intellectual Property" sell:
I wonder of “AT&T Intellectual Property” is a Non-Producing Entity. Maybe someone can send them an email to see what are their “products”: moc.tta|pitta#moc.tta|pitta.
AT&T, the other monopolist telco company, even had its logo on all the bags of the Democratic National Convention:

The NYTimes has an article about "Democrats Look to Lobbyist to Finance Convention":
But Mr. Farber's activities are a public display of how corporate connections fuel politics — exactly the type of special influence that Mr. Obama had pledged to expunge from politics when he said he would not accept donations from lobbyists… .