I was served incorrectly a civil summons through Superior Court of AZ Maricopa County for a credit card debt that is not mine. I paid court fee and "answered" in timely manner denying all charges I owe the debt.
In some states, if you were served incorrectly but still filed an answer timely, you have waived your objection to the improper service and cannot seek dismissal on that ground. I've not reasearched that point for AZ, but you'll want to do that to know if you've got a shot at getting it dismissed on that basis.
At such time I also submitted a request for production and validation of debt (on Aug 3, 2010)
Did you do that using the court's discovery rules or did you do that pursuant to the federal Fair Debt Collection Practices Act (FDCPA)?
If the former, then if the plaintiff did not provide the documents you requested, then the correct procedure is a motion to compel the response.
If the latter, then the plaintiff has no obligation to respond to you. The FDCPA applies only to debt collectors seeking to collect consumer debt. If the creditor is the credit card bank, then the FDCPA doesn't apply at all. If it is a debt collector that is suing, the FDCPA does apply, but the FDCPA doesn't affect the lawsuit. Under the FDCPA, you may request that the collector provide verification of the debt. This need only be a statement from the original creditor that the debt is owed. The collector cannot continue any collection efforts until the validation is provided EXCEPT that the collector may file a lawsuit to get a judgment. The reason that the FDCPA excludes lawsuits is that the creditor will have to provide proof of the debt in court, thus serving the function of giving you the verification.
The plaintiff has since sent me a interrogatories, request for admissions, and production of debt (due back to PA by Oct 24). I objected to everything on grounds "stilll awaiting validation of debt/request for production".
That's not a proper ground for objecting. If you made the request in discovery, then as noted above you need to file a motion to compel to remedy that. The plaintiff's failure to comply with the discovery request you made won't let you off the hook for giving the plaintiff what it asks for. If you don't respond, you may find yourself facing a motion to compel, too.
Can I go to court and file motion to dismiss on grounds they have not provided the requested information?
No. Again, if the request you made was pursuant to the discovery rules, then you need to file the motion to compel. Their failure to reply is not grounds for dismissal.