Your one-stop solution for entrepreneurial legal assistance. We offer advice based on the law, acquired through consistent practice and our business experience help us provide valuable service to our clients.


Protection for New, Non-obvious Inventions

We provide counsel for protecting inventions at every step of the patent process, from inception through litigation before the Patent Office and in US Federal court.

We view patents as important business tools that provide a sustainable competitive advantage to our client businesses.  All of our attorneys have a broad range of business experience in both the corporate world and as entrepreneurs.  We combine that business experience with legal expertise to deliver quality counsel both in the boardroom and courtroom to ensure your patent portfolio provides cost-effective, long-term value for your business.


Building Brand Value

We provide complete trademark services from identifying product name candidates to filing and representing clients  in all industries. Besides getting strong trademark protection for our clients, we provide aggressive legal services for hearings before the Trademark Office. This includes opposition, cancellation and defense actions.


We provide counsel for all aspects of copyright and other protection for creative content such as music, videos, and books.


Selecting the Best Entity for long-term Value

One of the most important decisions is the choice of business structure.  The business structure will set the stage for protecting your personal interests and managing your overall tax strategy. Most importantly, the right business structure can help secure funding for a startup enterprise.

Our attorneys have a broad range of business experience in both the corporate world and as entrepreneurs.  We combine that business experience with legal expertise to deliver quality counsel both in the boardroom and courtroom, so your business structure meets your financial goals.

Specializing in Business Law

As an established full service business law practice, Antero, Tormey & Petrin has represented a broad range of clients from Fortune 500 companies to regional and local business interests, as well as individuals. Our services include corporate formation, business startups, patents, trademarks, technology licensing, corporate governance, franchising, and international transactions.


Licensing and Franchising Generate Long-term Revenue

Franchising is a way to rapidly expand new business ideas, but they require both federal and state disclosures and agreements before a franchise offering can be made. We prepare and file franchise disclosure agreements and counsel franchisees and franchisors on the legal aspects of a franchise operation.


Advocating Our Client’s Interests

We believe the best business strategy is to avoid litigation. But sometimes it’s necessary and we do not compromise. We are experienced intellectual property litigators both in local and Federal courts. Our primary focus is on business law, especially with regards to intellectual property.

Patent Litigation

Recent litigation involved a local consumer product manufacturer that needed to enforce his patent rights against an out of state infringer. Our initial research indicted a way to protect our client. Several months of litigation in Federal courts ensued before a favorable settlement was reached.  Our client is now better positioned in the market and has stronger patent rights.

Our client, a small software startup, had a falling out with one of the co-founders of the company. The disgruntled co-founder sued the remaining partners and investors alleging fraud and claiming ownership of all of the company’s software.  We managed to successfully remove some of the defendants and eventually to get the entire case against our client dropped. Through this process we counseled the client on producing effective employment agreements and intellectual property assignment contracts.


I cannot put into words how much we appreciate the team at ANTERO TORMEY & PETRIN PC. They were able to communication our scenario to regain our trademark that were lost/abandoned due to one of our employees who oversaw this area passing away unexpectedly. At the same time, another organization began using our trademarked business name. Once aware, we sought their legal help. We explained what had happened and that we were in a jam, and they came to the rescue! With vigorous efforts from the team to fight for us on our behalf, we secured our trademark, WE WON! Thank you, ANT Legal, with special thanks to Mike Kasin. My family’s business and legacy will now continue under our original business name thanks to you. THANK YOU!”

– Laura Mae Bartlett, Cirius Group, Inc.

I engaged Mike Kasin at Antero Tormey & Petrin to help me transition my high tech service business and prepare for retirement. Mike listened carefully to my needs   and presented a range of possible approaches.  He was responsive and available but didn’t pressure me as I  weighed options and decided how to proceed. He prepared and reviewed documents quickly and efficiently. There was no churn and no stress. Mike provided professional counsel and good value to me as a small business owner.

— Ruth Hartman, WordCraft Inc

About Us

Antero, Tormey & Petrin is a business law firm with an emphasis on acquiring and protecting Intellectual Property. 

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Contact Us

(415) 355- 4529

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Our Address

101 Gregory Lane, Suite 45

Pleasant Hill CA 94523

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