when did this film release?
It  was commercially released in sixteen territories on May 1, 2007.
Spider-Man 3
"Spider-Man 3" was commercially released in sixteen territories on May 1, 2007. 
where did venom come from in spiderman 3 Eddie Brock becomes Venom after Peter bonded with an extraterrestrial symbiote that brings out his anger.
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Spider-Man 3 [SEP] Release
"Spider-Man 3" had its world premiere at Toho Cinemas Roppongi Hills in Tokyo on April 16, 2007. The film held its UK premiere on April 23, 2007 at the Odeon Leicester Square, and the U.S. premiere took place at the Tribeca Film Festival in Queens on April 30, 2007. "Spider-Man 3" was commercially released in sixteen territories on May 1, 2007. The film was released in Japan on May 1, 2007, three days prior to the American commercial release, to coincide with Japan's Golden Week. "Spider-Man 3" was also released in China on May 3, 2007 to circumvent market growth of unlicensed copies of the film.