PETLIBRO Pet Fountain Filter Patent Infringement Lawsuit: DesignLibro Schedule A Case No. 1:26-cv-11673
DesignLibro, Inc. Files a Federal Design Patent Infringement Lawsuit on September 23, 2026, in the Northern District of Illinois – PETLIBRO Replacement Filter Design, Patent D1,006,342, and Docket Updates
DesignLibro, Inc. filed a federal patent infringement lawsuit on September 23, 2026, in the U.S. District Court for the Northern District of Illinois. The case concerns alleged infringement of a U.S. design patent associated with PETLIBRO pet fountain replacement filters.
The lawsuit reportedly involves U.S. Design Patent No. D1,006,342, titled Pet Fountain Filter, which protects the ornamental appearance of a pet water fountain filter.
The lawsuit was filed against defendants identified through Schedule A, a format commonly used in intellectual property enforcement actions involving online sellers and e-commerce businesses.
Case Information
Plaintiff: DesignLibro, Inc.
Defendants: The Partnerships and Unincorporated Associations Identified on Schedule A
Court: U.S. District Court for the Northern District of Illinois
Case No.: 1:26-cv-11673
Date Filed: September 23, 2026
Presiding Judge: Hon. Rebecca R. Pallmeyer
Nature of Action: Patent Infringement – 35 U.S.C. § 271 (Patent Act)
Reported Patent at Issue: U.S. Design Patent No. D1,006,342 – Pet Fountain Filter
Case Update: On September 23, 2026, DesignLibro filed its complaint, submitted sealed Schedules A and B, and requested permission to file certain documents under seal. The plaintiff also submitted materials supporting a request for a temporary restraining order, asset restraint, expedited discovery, and alternative service of process. The available public docket does not establish whether that relief was granted.
About the Plaintiff
DesignLibro, Inc. is associated with PETLIBRO, a pet products brand known for automatic feeders, pet water fountains, replacement filters, and other pet-care accessories.
PETLIBRO's product offerings include pet fountain systems designed to provide drinking water for cats and dogs, along with replacement filters used in those systems.
The lawsuit concerns alleged infringement involving the appearance of pet fountain filters. The specific accused products, the plaintiff's asserted patent rights, and any additional legal claims should be confirmed through the complaint and supporting exhibits.
Monitor the Case
Public case information for DesignLibro, Inc. v. The Partnerships and Unincorporated Associations Identified on Schedule A, Case No. 1:26-cv-11673, is linked through PacerMonitor.
PacerMonitor provides access to federal court case information, although certain documents and features may require registration or payment. Court filings and case status may change over time.
The allegations are claims made by the plaintiff and do not, by themselves, establish liability.
Named in a Schedule A Lawsuit?
If your online store or business has been identified as a defendant in a Schedule A lawsuit, Rotek Law can assist in reviewing the allegations, evaluating potential legal options, and discussing possible resolutions.
Our team can help you understand the claims against your business and determine appropriate next steps. You may also explore our legal services for more information about our intellectual property practice.
Contact Us: +1 (305) 731-2593 Email: info@roteklaw.com
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Disclaimer
This page is provided for general informational purposes only and does not constitute legal advice. Case information may change as court proceedings develop. Readers should verify current case details through official court records. Viewing this page or contacting Rotek Law does not establish an attorney-client relationship.
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