About Us
diip LLC is led by Zhigang Ma, a licensed U.S. Patent Attorney with more than 20 years of experience in U.S. and international patent and trademark prosecution and portfolio management.
As of 2025, Mr. Ma has successfully represented clients in obtaining more than 2,600 issued U.S. patents across a broad range of technologies.
Drawing upon extensive experience in working with inventors, corporations, universities, and law firms worldwide, diip LLC provides responsive, high-quality services tailored to each client’s business objectives.
Our Services
We provide professional intellectual property services including:
· Preparation and filing of U.S. patent applications
· Preparation and filing of U.S. trademark applications
· Management of international intellectual property portfolios
· Coordination with foreign associates and intellectual property professionals
· Intellectual property strategy and prosecution management
Why Choose diip LLC?
· More than 20 years of U.S. intellectual property experience
· Over 2,600 U.S. patents successfully obtained for clients
· Direct communication with a licensed U.S. Patent Attorney
· Efficient, practical, and client-focused service
· High-quality professional services at competitive and affordable fees
· Personalized support for companies, startups, universities, and individual inventors
At diip LLC, we strive to deliver high-quality intellectual property services with professionalism, efficiency, and reasonable costs.