Who Has the Copyright Reserve for "JOSE CUERVO TEQUILA"?
Who do i have to Contact? If my Company wants to use their logo which is 
"JOSE CUERVO" permission i guess. we are willing to pay license fee.

Hi! Thanks for the question.

In cases of logos, marks and words, you must look for trademarks. The
owner of the "JOSE CUERVO TEQUILA" logo is Tequila Cuervo La Rojena,
S.A. De C.V. CORPORATION MEXICO. You can actually search for the
trademarks the company holds on the United States Patent and Trademark
Office website.

The trademark search results at the United States Patent and Trademark
Office expires after a certain time. If you want to see the trademarks
they are holding, just enter 'Jose Cuervo Tequila" on the search box
on this link (http://tess2.uspto.gov/bin/gate.exe?f=searchss&state=k6psm0.1.1)

The company however holds a copyright on its website. The page also
supplies an email address if you want to contact the company.

Email: cuervo@lawabel.com

"Legal Stuff"
http://cuervo.com/extras/legal.html

Here is their full contact information.

Tequila Cuervo La Rojena S.A. de C.V.  Tequila Cuervo La Rojena S.A.
de C.V.
Circunvalacion Sur #44A 
Fraccionamiento Las Fuentes 
Zapopan, Jalisco 45070 
MX 
1-2129499022 
Email: e-mail@lawabel.com / cuervo@lawabel.com
Website: www.cuervo.com 
http://www.whois.sc/cuervo.com

Search strategies: 
Searched at the United States Patent and Trademark Office website
Searched for the owners of the Jose Cuervo website at Whois Source
Searched at Google: Tequila Cuervo La Rojena, S.A.
            
I hope these links would help you in your research. Before rating this
answer, please ask for a clarification if you have a question or if
you would need further information.
            
Thanks for visiting us.             
            
Regards,             
Easterangel-ga             
Google Answers Researcher

DUH~