Patent Defenses is a way for businesses and individuals to find information about possible defenses to patent infringement claims under U.S. law. Although prepared by a law firm, it does not constitute and is not a substitute for competent patent law advice from competent patent professionals. Among other things, the variability of the kinds of inventions to which patent law can apply and the different circumstances in which inventions are made and infringement claims are brought prevent any overview or analysis that would cover any and all specific circumstances. In addition, and even though we seek to update this website on a roughly weekly basis, we necessarily cannot cover all related developments on all issues.

We seek instead to provide information that we hope will be useful as a starting point for thinking about issues relating to defenses against U.S. patent infringement claims.

Patent Defenses was last updated on November 17, 2019.

3 Ways to Use Patent Defenses

Below are some examples of how this research tool may be used:

1. Search for a specific term or keyword. The search box in the upper left-hand side of the page can be used to search Patent Defenses for a keyword or phrase. For example, search “double patenting,” “exhaustion,” or “Princo” (or other case name), and then click on the section(s) of interest in the search results.
2. Browse topics of interest. Patent Defenses is organized into easy-to-navigate sections found in the left-hand column of the page. Simply select a category on the left-hand column to learn more about that subject. For example, information about “direct” and “indirect” infringement can be found by expanding the “Non-Infringement” section.
3. Explore “Recent Case Highlights.” Short summaries of selected recent patent decisions can be found by selecting “Recent Case Highlights” in the left-hand column. These decisions are also referenced elsewhere in Patent Defenses.

Redacted Areas of Patent Defenses

You may note that some areas in Patent Defenses are indicated as “redacted.” These areas contain confidential tips and strategies that are restricted to clients of the firm. If you are a client of the firm and would like access to the redacted confidential areas, please contact businessdevelopment@klarquist.com.

About Klarquist

Klarquist is an intellectual property boutique law firm with its main office in Portland, Oregon. Founded more than 75 years ago, our firm has more than 55 professionals dedicated to intellectual property matters. Our patent prosecutors and litigators have deep technical knowledge in a wide range of technologies, and our focus on intellectual property matters sets us apart from other firms.

We counsel international and domestic clients in all facets of intellectual property law for both prosecution and litigation matters. Klarquist represents a broad range of clients – solo inventors, mid-size companies, universities, governmental agencies, and Fortune 500 companies. To learn more, visit klarquist.com.