Change of Status
The term Change of Status (COS) is the name given to the process through which a person can change from one temporary status (nonimmigrant) to another temporary status without having to leave the United States. Typical examples of this process are changing from a student visa status to H-1B. Usually, a successful COS is evidenced by the USCIS issuing you a new I-94.
Changing status from a temporary visa to a green card within the United States is also a change of status, but it is technically referred to as Adjustment of Status (AOS).
Mr Khanna provided great advice regarding my petition as it was complicated. We had to apply for an amendment while current H1B extension was pending. Mr Khanna made all the right arguments and we were able to get an approval. All along the process I've been working with Kalpana and Bharathi on regular basis and had calls scheduled with Mr Khanna when needed. They were very detailed and current in terms of documentation.
I would like to thank them once again and highly recommend "Law Office of Rajiv S. Khanna".