22772 Centre Drive, Suite 160, Lake Forest, CA 92630

Lake Forest, California

Legal Services for Intellectual Property

Patent and Trademark Prosecution

Full services related to intellectual property law — fully fluent in English and Japanese, and familiar with both U.S. and Japanese practice.

2008
Office Founded
30+
Years Experience
EN / 日本語
Fully Bilingual
USPTO & JPO
Registered Practice

About Us

An extended IP division for our client companies

The office was founded by Katsuhiro Arai in 2008, after 14 years of experience at one of the leading and largest IP firms in the nation, Knobbe, Martens, Olson & Bear LLP, and 8 years of experience at a patent firm in Japan. We provide full services related to intellectual property law, often representing companies. This includes frequently working with foreign associates and other IP firms on behalf of our clients. We are familiar with both U.S. practice and Japanese practice, and often act as an extended IP division of our client companies. Fully fluent in English and Japanese, we maintain close communication with our clients in their language of preference.

Patent procurement services include drafting and prosecuting patent applications, and conducting patentability studies as well as infringement studies. Prosecution of a patent application requires extensive interaction with the U.S. Patent and Trademark Office (PTO), especially Patent Examiners, via written correspondence and interviews.

We also provide services in trademark procurement, maintenance, and searches.

Our Mission

We strive to provide high-quality legal services tailored to our clients' unique needs, while keeping costs at a minimum.

Business Principles

We maintain the highest ethical standards while providing exceptional IP legal services at excellent value. The client's best interest is paramount.

Areas of Practice

Technologies we work in

A significant portion of the office’s patent practice concerns semiconductor fabrication, communication technologies, pharmaceuticals, cosmetics, and technologies grounded in chemistry. With over three decades of experience, Mr. Arai has also handled a variety of other technologies. The office also handles trademarks, foreign and domestic.

Semiconductor Fabrication
Communication Technologies
Pharmaceuticals
Cosmetics
Chemistry-Based Technologies
Trademarks, Foreign & Domestic

Our Members

The people you will work with

Katsuhiro Arai Katsuhiro Arai Attorney at Law, US Patent Agent, Japanese Patent Attorney Read full profile
Office staff
  • Kozue LarsonAssistant
  • Kristine AraiOffice Manager

Discuss your intellectual property matter

We work with corporate and individual clients, foreign associates, and other IP firms — in English or Japanese.