The Firm


“To Obtain and Enforce the Intellectual Property Rights of Our Clients and to Advise and Protect Our Clients From the Intellectual Property Rights of Others”

     Established in 1989, in Washington DC, DNLZito has a reputation for providing quality service tailored to the specific needs of each client.  The members of the firm stress direct communication and regular client contact.  The firm has an extensive litigation history in a wide range of technical disciplines. 

     We represent Fortune 500 corporations, mid-size businesses, start-ups and individual inventors in patent litigation, copyright litigation, trademark litigation, intellectual property litigation, patent applications, trademark applications, mediation and arbitration. 

     Our attorneys have been obtaining patents and registering trademarks and  have been actively engaged in intellectual property litigation for over thirty years.  We have litigated in District and Appellate Courts, including The United States Supreme Court, the U.S. Court of Appeals for the Federal Circuit, the U.S. Court of Appeals for the Fourth Circuit, the U.S. Court of Appeals for the Seventh Circuit, the U. S. Court of Federal Claims, and the U.S. District Courts for Maryland, Texas, Indiana, Nebraska, District of Columbia, Delaware, Pennsylvania, New York, California, Illinois, Virginia, North Carolina, South Carolina, Wisconsin, Michigan, Florida, Ohio, Louisiana and Massachusetts.  The firm represents both Plaintiffs and Defendants in actively defending accused infringers and in enforcing the rights of intellectual property owners. The firm has represented parties in all technical disciplines, including: communications, pharmaceuticals, computers, electronics, chemical, mechanical, automotive, medical, music, movies and agriculture. The firm has litigated utility patents, method patents, design patents, trademarks, trade dress, copyrights, software, trade secret and unfair competition matters.  The firm has numerous published cases from both the District and Appellate Courts.


DNLZito specializes in intellectual property matters including patents, trademarks, copyrights, trade secrets, federal regulation, unfair competition, and technology transfer.  We help our clients obtain and manage their intellectual property and actively assist in the continuing development and enforcement of their intellectual property.   We provide legal counsel in negotiating business contracts and in cooperative technical ventures.  The firm also represents clients in e-commerce matters.

Our Attorneys are experienced patent prosecutors and seasoned litigators, all with technical or scientific education.  We have prosecuted and litigated patents in a wide diversity of technologies, including:

• Computer hardware, software and firmware

• Telecommunications

• Cellular and Satellite and Broadcast Systems

• Internet and Business Methods

• Medical Devices

• Robotics

• Biotechnology

• Pharmacy

• Inorganic and Organic Chemistry

• Environmental Sciences

• Materials Engineering


We understand the value of your brand. Our practitioners have counseled and advised small, medium and Fortune 500 companies in the acquisition, protection, exploitation and enforcement of their trademarks and copyrights. Our attorneys have represented clients in the consumer products, manufacturing, apparel, food, fashion, electronics, entertainment, retail, media and pharmaceutical industries. Our services include:

• Managing global trademark portfolios

• U.S. and international clearance

• Filing and registration of trademarks

• Trademark opposition and cancellation proceedings

• Trademark and copyright licensing

• Domain name disputes (UDRP Proceedings) and other Internet-related disputes

• Copyright counseling, registration, clearance and protection



We represent small, medium and Fortune 500 clients in all aspects of intellectual property litigation. Our attorneys have litigated cases in district courts across the United States, the U.S. Court of Appeals for the Federal Circuit, and the U.S. International Trade Commission (ITC) and the United States Supreme Court.

With our technical expertise and extensive IP litigation experience, we know how to get results for our clients. As your strategic partner, we will work closely with you to develop litigation strategies to achieve your individual business objectives. We understand that litigation is a tool and we will seek to achieve your objectives as quickly as possible with minimal disruption to your business.  The seasoned IP litigators at dnlZito have the technical skills and trial experience to successfully litigate your case.


Our attorneys are well-versed in the intricacies of Section 337 Investigations. Our IP litigators have the technical experience and know how to navigate the complexities of ITC law and procedure. Our experienced attorneys in Washington, D.C. and Europe are well-positioned to handle the very fast pace of these high stakes investigations.


We offer a full range of domestic and foreign prosecution, including original drafting and filing of patent applications, US filing of foreign applications and foreign filing of US originated applications.  We engage in reexaminations, reissue proceedings, Inter-Partes Review, PTAB appeals, and appeals to the United States Court of Appeals for the Federal Circuit.


In addition to prosecution, we offer a full range of IP opinion and counseling on issues including: patentability, validity, infringement, due diligence, freedom to operate and product clearance.  We have helped numerous companies initiate IP programs or develop a more robust approach to IP identification, acquisition and portfolio management.