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The Business of Patents

Category: Invalidity

Defending the Patent Case – Make Sure to Serve This Interrogatory

Patent cases are very discovery intensive, and many courts now have “patent local rules” that provide regulated process by which plaintiffs disclose their infringement contentions (i.e., explanations of why the defendant’s acts infringe the plaintiff’s patent) and by which defendants disclose their invalidity contentions (i.e., explanations of why the plaintiff’s patent claims are invalid). These […]

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Federal Circuit Decision Concerning “Means-Plus-Function” Claiming

When drafting patent claims for a device, it is often desirable to describe the device based on how it works instead of how it is structured.  Describing a device based on how it works is often referred to as “functional claiming.”  Claims that make use of functional claiming are frequently broader in scope than those […]

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Invalidating Patent Claims For Failing to Include Required Aspects of an Invention

In last month’s blog, we discussed the Federal Circuit’s decision in X2Y Attenuators, LLC. V. International Trade Commission, a case which demonstrated how limiting descriptions of an invention in a patent specification can be used to restrict the scope of otherwise facially broad claims.  This month, in ScriptPro, LLC v. Innovation Associates, Inc.,the Federal Circuit […]

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Invalidity

Strategies for Using the Written Description Requirement to Invalidate Broad Patent Claims

In an earlier blog post (https://hanseniplaw.com/what-limitations-are-there-on-the-breadth-of-otherwise-novel-and-non-obvious-patent-claims/) we addressed the question of whether and to what extent U.S. law limits the breadth of patent claims that are otherwise novel and non-obvious. As we explained, both the Written Description and Enablement requirements of U.S. patent law may limit claim scope even if the prior art does not. […]

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Defending the Patent Case – A Tale of Two Cases

In our experience, many patent cases are actually a tale of two cases: The case based on the patent holder’s interpretation and application of the claims and the case based on the accused infringer’s interpretation and application of the claims.  Both cases involve the same set of patent claims. However, they often involve conflicting ways […]

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It Ain’t Over ‘Til It’s Over- Federal Circuit Court of Appeals Strengthens Reexamination Process

On July 2, 2013 the Federal Circuit Court of Appeals issued an opinion in Fresenius USA v. Baxter International, Inc., Case. No. 2012-1334, 1335 (Fed. Cir. July 2, 2013), which enhances the ability of patent infringement defendants to invalidate patents via the ex parte reexamination process. The ex parte reexamination process allows anyone to ask […]

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