EAD can be filed up to 120 days before the expiry. Please download the form from www.uscis.gov. Follow th instructions. File it at the service center per your state of residence with the applicable fees of $340. You will be given a 2 years approval. Even if you do online filing, you will be submitting a hard copy later. Therefore, it is advisable to do a paper based filing. www.santosgere.wordpress.com