Practice Focus


Mendelsohn Dunleavy helps to solve clients’ business problems by providing legal services related to intellectual property. Patents are business tools necessary to achieve clients’ goals. Learn more.


Attorneys at our firm have handled all stages of securing, licensing, and enforcing trademarks. Our firm handles trademark availability opinions and trademark infringement opinions. Learn more.


Attorneys at our firm have been involved in copyright registration and copyright licensing. Our attorneys have significant experience with copyrights and can handle Federal copyright registration. Learn more.

Opinions and Due Diligence

The firm has very significant experience in authoring all types of opinions in the patent field including invalidity opinions, non-infringement opinions, patentability opinions, freedom-to-practice opinions, and opinions on inventorship.

Post Grant Proceedings

The attorneys of the firm have handled or been directly involved in a variety of different types of post-grant proceedings including reissues, reexaminations, European oppositions, oppositions in other international jurisdictions.


We offer patent procurement services and opinions in at least the following diverse technology areas, electrical engineering, optics,acoustics, mechanical engineering, including micro-electro-mechanical.