You can submit your STEM OPT extension application to USCIS as early as 90 days prior to the end of your current OPT period. We recommend that you submit your STEM OPT Request via OISS Connect and upload your I-983 no later than one month prior to the end of your current Post-Completion OPT. Please remember that your complete application must be received by USCIS before your current OPT period expires.
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