About Us

About Us

Performed all facets of patent and trademark law for over 27 years. This extensive experience includes performing brand management for all types of businesses, including vetting, preparing and filing thousands of trademarks. Also, prosecuted thousands of computer software and hardware patent applications, with a concentration in consumer electronics, data encryption, semiconductors, artificial intelligence and machine learning systems, graphical user interfaces, medical devices, computer programming languages, SaaS platforms, virtual and augmented reality systems and Internet e-commerce applications. In addition, managed numerous worldwide brands with trademark prosecution and trademark litigation and protected clients’ IP by working with state, federal and foreign governments to combat the importation and sale of counterfeit products.

Other experience includes writing patentability, patent validity, and patent infringement opinions. Preparing and filing petitions for Inter Partes Review (IPR) and Post-Grant Patent Review (PGR) with the USPTO. Negotiating and preparing license agreements. Preparing and filing appeal briefs before the USPTO’s Board of Patent Appeals and Interferences. Preparing and prosecuting domestic and international trademarks and related matters, including protecting digital brands and copyrights. Counseling clients in the areas of trademark portfolio management and protection, and domain name management, protection, acquisition and recovery, including both defense and prosecution of domain name disputes under the Uniform Domain Name Dispute Resolution Policy (UDRP). Preparing and prosecuting PCT and EPO patent applications. Preparing, reviewing and editing high technology licensing and employment agreements. Providing litigation support and services to in-house corporate counsel and outside litigation counsel. Preparing and filing appeal briefs before the USPTO’s Board of Patent Appeals.

Protecting your ideas

DeFrank.com is tremendously proud of the impact that we have made in helping our clients by providing quality legal services and exceptional customer service.  

Quality Results

Our goal is to create assets from our clients’ innovations through patent, trademark and copyright law.  We take great pride in providing quality trademark legal services and exceptional customer service every single day. We’re absolutely here for you.


The attorneys at DeFrank.com work as a team to exceed each of our clients’ expectations. We have 30+ years of high-level experience helping businesses protecting the time, money and resources spent developing ideas and inventions.


Office: (855) 527-7463


19360 Rinaldi St., Suite 448
Northridge, CA 91326