Pharma

Pharma. D graduates are eligible to be medical writers or medical advisors in pharmaceutical and biotechnology companies, medical device and managed care companies. Medical writers work with physicians, medical scientists and subject matter experts (SMEs) and prepare regulatory documents, journals and other scientific documents.

I don't know anything about other colleges.
SIES has average package of INR 6 LPA for pharma student.
For further details:
http://www.siescoms.edu/

No, it is not mandatory to have GPAT/NET score. If you have done your Master's degree from M.Pharma or from M.Pharma with atleast 60% marks, then you are eligible for NIPER.

That's possible, but it's better to not have when you have many years of learning and studying.

No, it won't. Without a law degree, how will you get into a law firm?
A Diploma in IPR won't get you a better position because there are people out there who have done Masters in IPR laws and they will be preferred obviously.

D.Pharma Admission Process:
Most institutes offering the D. Pharmacy course admit students based on performance in a relevant entrance test, often followed by a round of personal interview, wherein their general aptitude for the course is tested. Admission process generally varies across colleges. A few institutes also provide direct admission based on the candidate's performance at the 10+2 level. Some of such entrance tests conducted in India are:
GPAT
UPSEE
JEE Pharmacy
AU AIMEE Pharmacy
CPMT
PMET.