Not exactly David.
Google has an intent to use patent on the "word(s)" Trustrank. Yahoo filed a patent based on the whitepaper. Two totally different things. Some of the particular links are on my blog...
CrankyDave » Blog Archive » TrustRank and Yahoo
It's certainly no secret that Google intends to use something they will call "TrustRank". Exactly how it is implemented, calculated, and what it may or may not do has yet to be seen as indicated by the intent to use patent.
Google has filed and been granted another extension for their intent to use patent, an indication that have not yet used the word(s) in commerce.
Dave