Microsoft Patents

News & Analysis as of

Federal Circuit Reverses Unreasonable PTAB Claim Construction, Upholds Idle Free Standard for Motions to Amend

The Federal Circuit decision in Microsoft Corp. v. Proxyconn, Inc., addressed several important issues relating to post-grant patent trials conducted by the USPTO Patent Trial and Appeal Board (PTAB), including the PTAB’s...more

PTAB vs. Federal Circuit Update

To date, the Federal Circuit has weighed in on 15 PTAB decisions from inter partes review proceedings. In 3 of the 15 decisions, the Federal Circuit has issued a substantive opinion: 1) In re Cuozzo Speed Technologies –...more

In a First, Federal Circuit Reverses PTAB Claim Construction in IPR

In only its second substantive decision on an appeal of a final inter partes review (IPR) decision, the Federal Circuit in Microsoft Corp. v. Proxyconn, Inc., signaled its willingness to engage with substantive issues of...more

Fed Circuit Reverses PTAB Decision in IPR Proceeding

On June 16, the Federal Circuit issued its first-ever reversal of a Patent Trial and Appeal Board decision in an America Invents Act post-grant proceeding. The opinion, drafted by Chief Judge Prost and joined by CAFC Judge...more

En Banc Federal Circuit Broadens What Constitutes A Means-Plus-Function Limitation (Williamson V. Citrix)

Yesterday, the Federal Circuit issued a decision in Williamson v. Citrix that includes an en banc portion that broadens the circumstances in which claim limitations may be deemed means-plus-function limitations. This appears...more

Federal Circuit Issues First Reversal & Remand of an Inter Partes Review in Microsoft Corporation v. Proxyconn, Inc. Addressing...

The Federal Circuit issued its first reversal and remand of a final decision in an inter partes review issued by the Patent Trial and Appeal Board (“PTAB”). In Microsoft Corporation v. Proxyconn, Inc., No. 14-1543, a panel...more

Federal Circuit Reverses Patent Trial and Appeal Board Claim Construction as Unreasonable

Although the U.S. Court of Appeals for the Federal Circuit has held that the U.S. Patent and Trademark Office Patent Trial and Appeal Board has the authority to use the broadest reasonable interpretation claim construction...more

Parties In Interdigital’s District Court Infringement Suits Agree To Extend Time Period To Complete FRAND And Damages-Related...

We previously reported on a scheduling order governing FRAND and damages-related discovery in InterDigital’s two patent infringement lawsuits pending in Delaware against ZTE and Nokia Inc., Nokia Corp. and Microsoft Mobile Oy...more

Motion To Join Additional Party Comes Too Late

Thynge, C.M. J. Magistrate recommends that plaintiff’s motion to amend its complaint to add infringement claims against non-party Microsoft be denied. Plaintiff sought to join Microsoft in November, 2014, which it...more

Allvoice Developments US, LLC v. Microsoft Corp. (Fed. Cir. 2015)

In August, 2009, Allvoice sued Microsoft in the Western District of Washington, alleging infringement of its U.S. Patent No. 5,799,273. In December, 2013, the District Court granted Microsoft's motion for summary judgment...more

PTAB Rules Lab Notebooks Insufficient to Prove Conception and Reduction to Practice

Swearing behind a reference is an enticing option for a Patent Owner, but the Board has again reminded parties that rigorous—and admissible—proof of conception and reduction to practice is still necessary....more

Is the Patent Litigation Boom Coming to an End?  [Video]

Feb. 3, 2015 (Mimesis Law) -- David Marcus, reporter for The Deal, talks with Lee Pacchia about how a recent sale of a patent portfolio could signal a slowdown in patent litigation work. Lee wonders if this spells a problem...more

Independent Corroboration Required To Prove Conception

Microsoft Corp. v. SurfCast, Inc. - Addressing the requirements for antedating prior art, the U.S. Patent and Trademark Office Patent Trial and Appeal Board (PTAB) ruled all claims of a challenged patent unpatentable,...more

IP Newsflash - November 2014

Central District of California Clarifies the Section 101 Analysis and Finds Another Two Patents Invalid - On November 3, 2014, Judge Mariana R. Pfaelzer of the Central District of California spent the better part of...more

Spread Out! Double Space Everything

In Microsoft Corporation v. Cellular Communications Equipment LLC, IPR2015-00011, Paper 3, (October 17, 2014), the Board gave Microsoft’s petition a filing date but required Microsoft to re-file the Petition because it...more

The PTAB rejects Microsoft's attempt to institute an IPR proceeding almost 7 years after being served with a complaint involving...

In Microsoft Corporation v. Virnetx Inc., Microsoft filed a petition seeking inter partes review of U.S. Patent No. 7,188,180 ("the '180 patent") on May 19, 2014. The '180 patent was asserted in a complaint for VirnetX Inc....more

Board Uses its Discretion to Duck Joinder Question

In Microsoft Corporation v. Enfish, LLC, IPR2014-00574, Paper 13, IPR2014-00576, Paper 13, IPR2014-00577, Paper 13 (September 29, 2014), the Board denied Microsoft’s request to join the petition, with one of the prior inter...more

IP Newsflash - October 2014

Federal Circuit Affirms Inequitable Conduct Based On “Intentionally Selective” Disclosure - On September 26, 2014, a divided Federal Circuit panel affirmed the unenforceability of three American Calcar patents,...more

Patent Filings, Decisions, Dispositions and Rehearings on September 6, 2015

New Filings - Microsoft Corporation filed IPR2014-01457 challenging claims 6, 13, 14, 15, 16, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 41, 46, 82, 83, 84, 85, and 86 of U.S. Patent No. 8,144,182 assigned to...more

Patent Filings, Decisions, Dispositions and Rehearings on September 5, 2014

Institution Decisions - FLIR Systems, Inc. v. Leak Surveys, Inc., IPR2014-00411 , Paper 8 (September 5, 2014), the Board instituted inter partes review of claims 1-58 (all of the claims) of U.S. Patent No. 8,426,813....more

August 2014: ITC Litigation Update: ITC Tightens Domestic Industry Requirement for Licensors After Recent Federal Circuit...

ITC Tightens Domestic Industry Requirement for Licensors After Recent Federal Circuit Decisions: Certain Computers and Computer Peripheral Devices, and Components Thereof, and Products Containing Same, Inv. No. 337-TA-841...more

A Second Chance on a Motion to Amend

In Microsoft Corporation v. Surfcast, Inc., IPR2013-00292, Paper 77 (June 5, 2014), the PTAB authorized the patent owner to file a corrected motion to correct what it deemed potential ambiguities in the proposed substitute...more

Suppliers May DJ an NPE, But It Won’t Be Easy - Microsoft v. DataTern, Inc.

Addressing declaratory judgment jurisdiction based infringement allegations against customers, the U.S. Court of Appeals for the Federal Circuit affirmed in part and reversed in part the district court’s finding of...more

Legal Alert: UPDATE: The Hare Loses Steam – Patent Litigation Reform Law Unlikely This Year

Efforts by the U.S. Senate to pass an alternative to the Innovation Act, which aims to reform abusive patent litigation, have stalled. Sen. Patrick Leahy, who is leading the effort, has announced that his committee is tabling...more

Could Federal Circuit Decision Weaken FRAND Defense?

On Monday, May 5, 2014, the Court of Appeals for the Federal Circuit, by transferring the Microsoft v. Motorola case to the Court of Appeals for the Ninth Circuit, issued an order which may significantly impact the ability of...more

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