First, a crucial clarification: (developed by Irrational Games, published by 2K) natively includes full English audio, text, and subtitles in virtually all global retail and Steam versions. There is no official “patch” just to add English, as it is the master language.
Many are fake, contain adware, or are simply renamed .ini tweaks that no longer work. Download Bioshock Infinite English Language Patch
If you own a legitimate but region-locked copy, your best bet is to request a refund and buy the global Steam version during a sale (often $7.49). The hassle and risk of unofficial patches are not worth it for a game that properly supports English natively everywhere except intentionally restricted sub-licenses. Download Bioshock Infinite English Language Patch