Basically, you have two choices:
1) Proceed with your product and have the strong probability of a large corporation (read lotsa lawyers) contact you with a cease and desist and possibly take your profits, or
2) Contact Universal Studios and ask them to put you in touch with their licensing folks and try to get an agreement to use their product.
However, I must point out that they will probably not be too enthusiastic about allowing any use of their registered products. Either that, or it will take some major bucks and royalties. But, certainly no harm talking with them.
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Steve Halket
Judgment Recovery of Houston
[email protected]
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This is my PERSONAL OPINION and is not legal advice! Consult your local attorney for your specific situation and laws!