Bissell Inc. v. International Trade Commission

Case Overview and Background

This patent dispute pits two major operating companies in the competitive floor-care appliance market against each other: Bissell Inc., a long-standing American manufacturer, and Tineco Intelligent Technology Co., a rapidly growing Chinese competitor. The conflict began when Bissell accused Tineco's popular smart wet-dry vacuum cleaners, specifically the Tineco Floor One S3 and S5 Pro models, of infringing several of its patents. The technology at the heart of the dispute involves a self-cleaning feature for these combination mop-and-vacuum devices, where the device performs an automatic cleaning cycle while docked on a storage tray. The appeal to the Federal Circuit centered on U.S. Patent No. 11,076,735, which claims a wet-dry cleaning apparatus where the battery charging circuit is disabled during the self-cleaning cycle.

The case reached the U.S. Court of Appeals for the Federal Circuit after a contentious battle at the International Trade Commission (ITC), a specialized venue favored for its speed and powerful remedies. Bissell initially filed a complaint at the ITC in March 2022, seeking an exclusion order to block the importation of Tineco's allegedly infringing products into the United States. The ITC has the authority to issue such orders, making it a high-stakes forum for patent holders looking to protect their domestic market. The Commission initially found that Tineco's original products did infringe two Bissell patents and issued an import ban. However, a key issue arose after Tineco implemented a firmware update to redesign its products post-complaint. The ITC's Administrative Law Judge and the full Commission ultimately determined that these redesigned products no longer infringed, prompting Bissell's appeal to the Federal Circuit.

The case is notable for several reasons. It highlights the fierce competition in the smart home appliance sector and illustrates a common strategy in ITC litigation where an accused infringer redesigns its product—often through a simple software or firmware change—to circumvent an infringement finding and avoid an import ban. The Federal Circuit's precedential decision on May 11, 2026, affirmed the ITC's finding of no infringement by the redesigned products. The court upheld the ITC's determination that Tineco's firmware update, which caused the battery to charge briefly twice during the cleaning cycle, meant the charging circuit did not "remain disabled" as required by Bissell's patent claim. This ruling underscores the challenges patent holders face in enforcing their rights against adaptable technology and the exacting level of scrutiny applied to claim language in infringement analyses. The outcome allows Tineco to continue importing and selling its redesigned products in the significant U.S. market.

A senior patent litigation analyst's summary of key legal developments in Bissell Inc. v. International Trade Commission, Case No. 24-1509, at the U.S. Court of Appeals for the Federal Circuit, and the underlying U.S. International Trade Commission investigation.

Case Summary

This dispute centered on allegations by Bissell that Tineco's wet/dry surface cleaning devices infringed its patents. The litigation ultimately turned on a firmware redesign implemented by Tineco shortly after the case was filed. The U.S. International Trade Commission (ITC) found that Tineco's original products infringed, but that redesigned products with updated firmware did not. This finding was affirmed by the Federal Circuit, handing a significant victory to Tineco by allowing its current products to continue to be imported and sold in the U.S.

Chronological Developments

District Court & ITC Filings

• 2022-02-01: Bissell Inc. and Bissell Homecare Inc. ("Bissell") filed a patent infringement complaint against Tineco Intelligent Technology Co., Ltd. and related entities ("Tineco") in the U.S. District Court for the District of Delaware (Case No. 1:22-cv-00150). The complaint asserted five patents, including U.S. Patent No. 11,076,735 ('735 Patent).
• 2022-02-02: Bissell filed a complaint at the U.S. International Trade Commission under Section 337 of the Tariff Act of 1930, alleging unfair importation and sale of wet/dry surface cleaning devices by Tineco that infringed the same five patents. Bissell requested a limited exclusion order and cease and desist orders.
• 2022-03-09: The ITC instituted an investigation based on Bissell's complaint, designated as Certain Wet Dry Surface Cleaning Devices, Inv. No. 337-TA-1304. The case was assigned to Chief Administrative Law Judge (CALJ) Clark S. Cheney.
• 2022-03-22: In the parallel Delaware case, Tineco filed an unopposed motion to stay the litigation pending the final determination of the ITC investigation, which was subsequently granted. This is a common procedure under 28 U.S.C. § 1659.

ITC Investigation & Redesign

• Post-March 2022: Shortly after the ITC investigation was instituted, Tineco developed a firmware update for its accused Floor One S3 and S5 Pro devices. This redesign was a critical strategic move. The '735 patent requires that a battery charging circuit "remains disabled during the unattended automatic cleanout cycle." Tineco's new firmware altered the 120-second cleaning cycle so the battery charging circuit would activate briefly twice during the cycle, thereby circumventing the literal language of the patent claim.
• 2022-12: A five-day evidentiary hearing (trial) was held before CALJ Cheney.

ALJ Initial Determination

• 2023-03-24: CALJ Cheney issued his Final Initial Determination (FID).
  • Violation Found (Original Products): The ALJ found that Tineco's original products infringed claims 1, 13, and 15 of the '735 patent and a claim of another Bissell patent.
  • No Violation (Redesigned Products): Crucially, the ALJ determined that Tineco's redesigned products, which feature the firmware update, did not infringe. The ALJ found no literal infringement because the charging circuit did not "remain disabled" throughout the entire cycle. He also found no infringement under the doctrine of equivalents, a finding based on the credibility of expert testimony and application of the claim language rather than a legal doctrine of claim vitiation.
  • Domestic Industry: The ALJ found that Bissell satisfied the technical and economic prongs of the domestic industry requirement.
• 2023-04-07: The ALJ issued his Recommended Determination on Remedy and Bond, recommending a limited exclusion order and cease and desist orders for the infringing original products.

Commission Final Determination

• 2023-08-01: The Commission issued a notice of its decision to review the ALJ's Initial Determination in part.
• 2023-12-18: The full Commission issued its Final Determination, affirming the ALJ's findings. It confirmed a Section 337 violation with respect to Tineco's original products and issued a limited exclusion order and cease and desist orders against them. It also affirmed the finding of no violation for the redesigned products, allowing Tineco to continue importing them.

Federal Circuit Appeal and Final Outcome

• 2024-02-22: Bissell appealed the ITC's Final Determination regarding the redesigned products to the U.S. Court of Appeals for the Federal Circuit. Tineco filed a cross-appeal challenging the domestic industry finding.
• 2026-05-11: The Federal Circuit (Case No. 24-1509) issued a precedential opinion affirming the ITC's decision in its entirety.
  • The court found that the Commission's determination of no literal infringement by the redesigned products was supported by substantial evidence.
  • It also affirmed the finding of no infringement under the doctrine of equivalents, holding that the ALJ had properly found Bissell's expert testimony unpersuasive.
  • On the cross-appeal, the court affirmed the ITC’s finding that Bissell had established a domestic industry for its patented products.

Final Disposition: The litigation is decided. The Federal Circuit's affirmance finalized the ITC's orders. Tineco's original, infringing products are barred from importation into the U.S., but its newer, redesigned products are not. Tineco remains free to import and sell all its current products in the United States. This case serves as a key example of how a swift firmware redesign can successfully avoid infringement of a patent, particularly in the fast-paced environment of an ITC investigation.

Parallel Proceedings

• District Court: The parallel case in the District of Delaware (Bissell Inc. et al. v. Tineco Intelligent Technology Co., Ltd. et al., No. 1:22-cv-00150) was stayed pending the ITC outcome and, given the definitive Federal Circuit ruling, is unlikely to proceed on the same grounds.
• PTAB: No significant inter partes review (IPR) or post-grant review (PGR) proceedings at the Patent Trial and Appeal Board (PTAB) involving U.S. Patent No. 11,076,735 and Tineco have been identified as impacting this litigation.

For the plaintiff, Bissell Inc., the following counsel have appeared in the appeal at the U.S. Court of Appeals for the Federal Circuit. The attorneys for Bissell appeared from the law firms of Quinn Emanuel Urquhart & Sullivan, LLP and Baker Botts L.L.P.

Quinn Emanuel Urquhart & Sullivan, LLP

Attorneys from Quinn Emanuel represented Bissell as the complainant in the underlying U.S. International Trade Commission (ITC) investigation, Inv. No. 337-TA-1304, which led to this appeal. The firm's website notes that the ITC found a violation of Section 337 by the respondent, Tineco, and issued an exclusion order.

• Kevin P. B. Johnson

  • Role: Counsel. It is not specified if he was lead counsel in the appeal, but he was part of the appellate team.
  • Firm & Location: Quinn Emanuel Urquhart & Sullivan, LLP, Redwood Shores, CA.
  • Note: Johnson is an experienced intellectual property litigator who frequently handles cases before the Federal Circuit and the ITC.

• Alex Lasher

  • Role: Counsel. Appeared as part of the team representing Bissell on appeal.
  • Firm & Location: Quinn Emanuel Urquhart & Sullivan, LLP, Redwood Shores, CA.
  • Note: Lasher's practice focuses on high-stakes patent litigation in various technology sectors.

• Brian Saunders

  • Role: Counsel. Appeared as part of the team representing Bissell on appeal.
  • Firm & Location: Quinn Emanuel Urquhart & Sullivan, LLP, Washington, D.C.
  • Note: Saunders specializes in intellectual property litigation, with a focus on proceedings before the ITC.

• Sam Stake

  • Role: Counsel. Appeared as part of the team representing Bissell on appeal.
  • Firm & Location: Quinn Emanuel Urquhart & Sullivan, LLP, Redwood Shores, CA.
  • Note: Stake has a practice centered on patent litigation matters in federal courts and the ITC.

Baker Botts L.L.P.

Baker Botts attorneys also appeared for Bissell in the Federal Circuit appeal.

• Michael Hawes

  • Role: Counsel. Part of the appellate counsel team for Bissell.
  • Firm & Location: Baker Botts L.L.P., Palo Alto, CA.
  • Note: Hawes is a seasoned patent litigator with extensive experience in federal court and ITC litigation involving complex technologies.

• Lori Ding

  • Role: Counsel. Appeared as part of the appellate team for Bissell.
  • Firm & Location: Baker Botts L.L.P., Palo Alto, CA.
  • Note: Ding's practice focuses on intellectual property litigation, including patent disputes at the trial and appellate levels.

• Lisa M. Kattan

  • Role: Counsel. Part of the appellate counsel team for Bissell.
  • Firm & Location: Baker Botts L.L.P., Washington, D.C.
  • Note: Kattan is a former senior attorney at the ITC and specializes in Section 337 investigations and related intellectual property matters.

• Tommy Martin

  • Role: Counsel. Part of the appellate counsel team for Bissell.
  • Firm & Location: Baker Botts L.L.P., Houston, TX.
  • Note: Martin focuses on intellectual property law, with an emphasis on patent litigation in district courts and at the ITC.

Counsel for the Defendant & Intervenor

The primary defendant in this appeal is the U.S. International Trade Commission (ITC). However, the real party in interest is the original respondent in the underlying ITC investigation, Tineco Intelligent Technology Co., Ltd., which participated in the appeal as an Intervenor. Counsel for both the ITC and Tineco appeared before the Federal Circuit.

For Defendant: U.S. International Trade Commission

The ITC's Office of the General Counsel represents the agency in appeals of its decisions.

• Name: Wayne W. Herrington

  • Role: Lead Counsel (for the ITC)
  • Firm: U.S. International Trade Commission, Office of the General Counsel (Washington, D.C.)
  • Note: As a senior attorney in the ITC's Office of the General Counsel, Herrington has represented the agency in numerous appeals before the Federal Circuit involving Section 337 investigations.

• Name: Dominic L. Bianchi

  • Role: Of Counsel (for the ITC)
  • Firm: U.S. International Trade Commission, Office of the General Counsel (Washington, D.C.)
  • Note: Bianchi serves as the General Counsel for the ITC and has overseen the agency's legal representation in a wide array of patent and trade cases.

• Name: Sidney A. Rosenzweig

  • Role: Of Counsel (for the ITC)
  • Firm: U.S. International Trade Commission, Office of the General Counsel (Washington, D.C.)
  • Note: As an Assistant General Counsel, Rosenzweig has been involved in briefing and arguing numerous patent-related appeals on behalf of the Commission.

For Intervenor: Tineco Intelligent Technology Co., Ltd.

Tineco was represented by the law firm Foley & Lardner LLP, which has a prominent intellectual property and ITC litigation practice.

• Name: Mareesa A. Frederick

  • Role: Lead Counsel (for Tineco)
  • Firm: Foley & Lardner LLP (Washington, D.C.)
  • Note: Frederick is a partner and co-chair of Foley's IP Litigation Practice and has extensive experience leading Section 337 investigations at the ITC and subsequent Federal Circuit appeals.

• Name: Stephen B. Maebius

  • Role: Of Counsel (for Tineco)
  • Firm: Foley & Lardner LLP (Washington, D.C.)
  • Note: Maebius is a senior counsel known for his deep experience in patent law, particularly in post-grant proceedings and international IP protection strategies.

• Name: Michael D. Kaminski

  • Role: Of Counsel (for Tineco)
  • Firm: Foley & Lardner LLP (Washington, D.C.)
  • Note: Kaminski is an IP partner with a practice focused on patent litigation, including significant experience in cases before the ITC and federal district courts.