The five primary requirements for patentability are: (1) patentable subject matter; (2) utility; (3) novelty; (4) non-obviousness; and (5) enablement. Like trademarks, patents are territorial, meaning they are enforceable in a specific geographic area.
The forms to apply for a patent may be found at the U.S. Patent and Trademark Office (USPTO) website. (Applications filed before September 16, 2012 involved a different set of forms.)
I would suggest you file a Provisional Patent Application (PPA) on your own for about $60 with the US Patent Office. Once you have filed the PPA (which is never examined and isn't a real patent), you have 1 year to claim ``patent pending'' before you must file your utility patent (maybe $5000 or more).
Here is the procedure on how to apply for patent in India: STEP 1: Invention Disclosure. STEP 2: Patentability Search. STEP 3: Filing an Application for a Patent. STEP 4: Patent Drafting. STEP 5: Filing the Patent Application. STEP 6: Request for Examination. STEP 7: Responding to Objections (if any) ... STEP 8: Grant of Patent.