How do you enforce an attorney's "charging lien" in Colorado against settlement funds held by a third party (escrow).

The North Valley Bank seems to suggest your lien would be superior. http://www.courts.state.co.us/Courts/Court_of_Appeals/opinion/2010/09CA2559.pdf However the question is did you file your notice in a litigated case in California? Or is this a plain notice of lien served on opposing parties and escrow agent? I would imagine in this instance you would file a complaint in the District Court, possibly in federal court if its a substantial amount of money, and then seek an order impressing the lien. I note, however, in Colorado if your law firm is a corporation or a partnership, you will need local counsel who is licensed in CO though you can be moved in pro hac vice.