Posts in Litigation

Federal Circuit Reverses PTAB Claim Construction, Reviving Cooling Patent

The U.S. Court of Appeals for the Federal Circuit (CAFC) on Thursday, March 7, vacated a decision of the Patent Trial and Appeal Board (PTAB) that had held unpatentable certain claims to CoolIT Systems, Inc.’s patent. U.S. Patent 9,057,567 is titled “Fluid Heat Exchange Systems” and is directed to a system for fluid heat transfer to cool electronic devices. On appeal to the CAFC, CoolIT argued that the PTAB erred in construing one of the claim terms, “matingly engaged” and that even under the PTAB’s construction, the asserted prior art did not meet the matingly engaged limitation.

Patent Filings Roundup: Sitnet LLC Patents Challenged; Touchmusic Launches First Campaign; NPE Activity in UPC Ramps Up

This week was an above-average one for patent filings in both the Patent Trial and Appeal Board (PTAB) and in district courts. The PTAB had two new post grant review (PGR) petitions and 39 new inter partes review (IPR) petitions, for a total of 41 new filings. And the district court also had heightened activity with 75 new filings.

After Weber v. Provisur, Confidentiality Provisions May Not Be Sufficient to Protect Your Documents from Being Prior Art

On February 8, 2024, the U.S. Court of Appeals for the Federal Circuit issued a precedential decision in Weber, Inc. v. Provisur Technologies, Inc., reversing the finding of the Patent Trial and Appeal Board (PTAB) that certain operating manuals with limited dissemination and confidentiality restrictions did not qualify as prior art. The Federal Circuit’s decision concluded that the Board misapplied the analysis for meeting the public accessibility standard for a printed publication to qualify as prior art.

Federal Circuit Says Narrowing Limitation Does Not Create a Contradiction Leading to Indefiniteness

The U.S. Court of Appeals for the Federal Circuit (CAFC) issued a precedential decision today reversing the Western District of Texas district court’s indefiniteness analysis and explaining that it improperly found a contradiction between two claim limitations to arrive at its indefiniteness holding. Amperex Technology Limited filed an action seeking declaratory judgment of noninfringement and challenged the validity of certain claims of Maxell, Ltd.’s U.S. Patent No. 9,077,035 for a rechargeable lithium battery and Maxell asserted infringement of the patent in a separate action. The two actions were consolidated in the Western District of Texas and the court ultimately held that two of the “wherein” clauses of the sole independent claim 1 of the ‘035 patent contradicted one another.

CAFC: PHOSITA Can Bridge Gaps with Reasonable Success Under Result-Effective Variable Doctrine

On March 5, the U.S. Court of Appeals for the Federal Circuit (CAFC) issued a precedential decision in Pfizer Inc. v. Sanofi Pasteur Inc. affirming lower rulings by the Patent Trial and Appeal Board (PTAB) that invalidated Pfizer’s patent claims and denied motions to amend (MTA). Although the Federal Circuit vacated the PTAB’s MTA denials with respect to two patent claims, the ruling adds new contours to the appellate court’s case law on obviousness in ways that could affect companies that are patenting chemical inventions with claimed numerical ranges.

CAFC Partially Reverses Noninfringement Judgment But Scraps IBM Web Advertising Claims as Ineligible

The U.S. Court of Appeals for the Federal Circuit (CAFC) in a precedential decision today mostly upheld a district court ruling that found Chewy, Inc. did not infringe several claims of one IBM web advertising patent and that granted summary judgment of patent ineligibility on certain claims of another. However, the decision, authored by Chief Judge Kimberly Moore, reversed the district court’s finding of noninfringement on one of the five asserted claims of one patent, remanding the case for further proceedings on that issue.