I know this is not the news you want -- I disagree with xavier and I'll explain why later.
I challenge xavier to find me one federal court case that supports his/her position. There are not any that I know of -- I wish there were but I have not been able to find one.
You may or may not be able to move the case to federal court. However, I would not waste my energy on this unless someone can show you a published opinion from a federal court -- that is the only thing that is going to be helpful.
The real answer lies in the wording in state law. I do not have any citations for you. I am told that AZ judges are taking the view that credit cards are written agreements. The same is true for FL, OK, MO and IL (or at least I am told by individuals in those states who have been down that path). I only know of one state (VA) that is taking the opposite view -- there may be others. In every case (pro and con) the answer lies in the wording of the state law.
I would like to be wrong on this -- but I don't think that I am. Here is my standard answer to this question:
The Truth in Lending Act seems to be the common catalyst for people’s belief that a credit card is an open account. The TILA does not mention "open accounts", and its applicability to such would to me be very questionable. What it does refer to is "open end" credit. An "open end" and an "open account" are not the same. Unfortunately, because of similar names and the word "open" being included in both, most people assume they mean the same thing; they don't. While credit cards are "open end" accounts, they are rarely considered "open accounts." However, some charge cards can be considered open accounts, but a "charge" card is different than a "credit" card.
There is little law on this subject and it is not entirely clear which statute of limitations should apply to a credit card debt. In situations in which the financing is provided by the merchant, then the “open account” statute of limitations should apply because the transaction is one for the sale of goods and the financing aspect is merely a portion of that arrangement. However, if a third party provides the financing, then the suit is one based on the written contract to provide credit.
More and more it seems that judges in a number of states are persuaded by the argument that a bank credit card is not the same as a store charge card. As a result, judges seem to be taking the view that credit cards are written agreements.
Good luck to you -- let me know what you find out.