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USPS returning registered trademark HTML in Real Time Shipping methods

When retrieving Real Time Shipping methods from USPS, there is HTML showing in the returned rates such as: <sup>&reg;</sup>
This also causes an error when selecting one these returned rates, such as:
A potentially dangerous Request.Form value was detected from the client (ShippingMethodID="...Class Mail<sup>&reg;</sup> Int...")

USPS has added the registered trademark to their returned rates. This was only for International addresses at one time but was added around 01/22/2012 for Domestic rates as well, causing issues with all returned USPS rates in older versions of the software ( and and earlier).

For versions: and ONLY go to THIS PAGE and follow the instructions.

NOTE: If you have customized source code, check with your developer before applying this patch.