~ Protect Your Passion ~
Always
Legal Counsel for Technology, Science, and Growth Companies and for Entrepreneurs, Inventors, Startups, and Small Businesses
including Business Law and Intellectual Property Law, especially Copyright, Trademark and Patent Law
About William
Mansfield Law is passionate about protecting passions
legally, from entity formation through exit,
including due diligence, for entrepreneurs, emerging
businesses, and investors, with legal fees that are both accessible and affordable.
Attorney William Mansfield is licensed to practice and
represent clients in the states of Massachusetts and
New York.

Practices
Business Law
Corporate Law
Intellectual Property Law
Patents
Design Patents
Copyright Law
Trademark Law
Trade Dress Law
Trade Secret Law
International Intellectual Property Law
International Patent Law
International Trademark Law
Litigation, Mediation & Arbitration
Entity Formation
Contracts
Contract Review
Founder Agreements
NDA
Noncompete
Nonsolicitation
Employment Contract
Term Sheets
Due Diligence
Pitch Deck Review
Market Analysis & Counsel
Patent Searches
Provisional Patents
Nonprovisional Patents
Cease & Desist
Demand Letters
Litigation
Industries
AR, VR & MR
Agriculture & Energy
Green Energy & Solar Energy
Green Technology
Environmental & Recyclables
Computers & Technology
Hi-Tech & Low Tech (inventions)
Hospitality & Travel Industry
Internet of Things
Machine Learning
Deep Learning
Cognitive Computing
Artificial Intelligence
Life Sciences
Medical Devices
Predictive Analytics & Big Data
Nanotechnology
Pharmaceutical
Robotics
Social Media, Digital Marketing & Gamification
Solar
Hydrogen Peroxide
Recyclables
Renewables
Sustainability
Personal Care
Laser
Cryptocurrency
Travel & Leisure
Sports & Hobbies
Marine Industry
Home Improvement
For-Profit Organizations
Digital Media & Internet Companies
Coworking Spaces
Transportation
Greeting Cards
SBIR Grants