Advocate Prerna advises clients on a variety of topics, including business formation, compliance, intellectual property rights (including trademark registration and prosecution, copyright registration, and so on), anti-competitive trade practises, and so on. She works with everyone from start-ups to international brands looking to expand into India. Her client list is diverse, and she has worked with companies in a variety of industries, including entertainment, media, digital, fashion, retail, real estate, healthcare, hospitality, education, wellness, and food and nutrition.

Advocate Prerna also advises customers on the vetting and drafting of agreements, MOUs, deeds, and other legal documents, and has worked with a number of clients on project documentation such as concession contracts, partnership contracts, non-disclosure, non-solicitation contracts, and trust deeds. Advocate Prerna Oberoi is involved with multiple start-ups as an advisor and mentor, and she invests a significant amount of time in their early stages.