Posts Tagged: means-plus-function


Intellectual Ventures v. T-Mobile: Summary Judgment of Non-Infringement Vacated Due to Incorrect Claim Construction

In claim construction analyses, the plain and ordinary meaning of a claim term will not be narrowed by statements in the prosecution history, unless those statements clearly …

Federal Circuit Reverses District Court’s Invalidation of Patents Asserted Against Apple

On appeal to the Federal Circuit, Zeroclick argued that the district court erred in construing those two terms as means-plus-function limitations, an argument with which the Federal …
By Steve Brachmann
1 year ago 0

A Primer on Indefiniteness and Means Plus Function

Means plus function claiming allows the drafter to claim the invention based on functionality rather than the more traditional (and preferred) claiming technique that employs structure within …
By Gene Quinn
2 years ago 2

Use of ‘Means’ with term that Designates Structure Does Not Invoke § 112 ¶ 6

MindGeek and Playboy filed an IPR petition. The Board determined that § 112 ¶ 6 did not apply because “‘wireless device means’ is not purely functional language, but rather is language …

CAFC: Software means plus function claims Indefinite for failure to disclose algorithm

The Court also affirmed that the this means-plus-function term was indefinite. In the case of computer-implemented functions, the specification must disclose an algorithm for performing the claimed …

It makes no sense for an algorithm to be unpatentable simply because it is implemented in software

KAPPOS: "Back when I was an engineer we saw it in mainframe computers where you’d make an invention and frequently initially the software wasn’t fast …
By Gene Quinn
4 years ago 50

Was the Federal Circuit Trying to Save Us from Ourselves in Williamson v. Citrix?

In Williamson v. Citrix, the Federal Circuit overruled its own precedent that there is a “strong” presumption that claim limitations that do not use the term “means” …
By Bryan Wheelock
4 years ago 6

A Strategy for Protecting Software Claims from Invalidation Under the Algorithm Requirement

In general, the courts distinguish between functions and algorithms, and they require patent applicants to disclose algorithms to cure perceived deficiencies in functions. The problem with this …

Federal Circuit Review – Issue 56 – June 26, 2015

In this issue of the Federal Circuit Review: (1) A Patent Owner Must Show They Are Entitled to Amended Claims In an Inter Partes Review, Including in View …

Functional Claiming of Computer-Implemented Inventions in View of Recent Decisions

The opinion focused on whether adequate structure corresponding to the “coordinating” function is disclosed in the specification. After determining that a special purpose computer is required to …
By Nicholas R. Mattingly
4 years ago 1

Avoiding Invocation of Functional Claim Language in Computer-Implemented Inventions

Functional claim language is increasingly being used by practitioners to capture the metes and bounds of an invention, especially in computer-implemented inventions. Sometimes using functional language in …
By Nicholas R. Mattingly
4 years ago 3

A Software Patent History: The Algorithm Cases

These cases are very important though because they give us the best glimpse yet into understanding the disclosure requirements for software patents that utilize means-plus-function claim language. …
By Gene Quinn
5 years ago 13

The Ramifications of Alice: A Conversation with Mark Lemley

LEMLEY: "I think Alice is a real sea change on the patentable subject matter issue. I’ve heard a lot of folks talk about how Alice doesn’…
By Gene Quinn
5 years ago 26

Heightened Judicial Deference for Patent Claim Constructions?

Patent litigants have long expected an appeal to follow nearly every jury verdict and that a key question (if not the key question) on appeal will be …
By Jim Lennon
6 years ago 0

Livid About Non-precedential Avid Decision from Federal Circuit

When an element is claimed using language falling under the scope of §112, ¶6, the specification must be consulted to determine the structure, material, or acts corresponding to the …