Jennifer Duffy — Nitrous Oxide Product Liability Attorney

Updated: September 2026 | Attorney: Jennifer Duffy | Law Firm: Law Offices of Jennifer Duffy, APC

Jennifer Duffy is an attorney with the Law Offices of Jennifer Duffy, APC who represents plaintiffs in active nitrous oxide product liability litigation involving Amazon and companies involved in the manufacture, distribution, marketing, and sale of large-format nitrous oxide products.

Duffy represents plaintiffs in pending nitrous oxide cases including Todd v. Amazon.com Services LLC, et al., Finnegan v. Amazon.com Services LLC, et al., and Krouse v. Amazon.com Services LLC, et al. The litigation includes federal and state court actions and has progressed into discovery.

Duffy began investigating potential claims involving large-format and flavored nitrous oxide products in 2025. Her work has included investigation of the products and companies involved in their manufacture and distribution, research into potential product liability claims, consultation with scientific and medical experts concerning alleged injuries and causation, and development of potential liability theories involving manufacturers, distributors, sellers, and online marketplaces.

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Who Is Jennifer Duffy?

Jennifer Lynn Duffy is an attorney with the Law Offices of Jennifer Duffy, APC. She is an active member of the State Bar of California and has practiced law in California since 1994.

Duffy represents plaintiffs in product liability and other civil litigation. Her current work includes representing individuals alleging serious neurological and other injuries associated with recreational use of large-format and flavored nitrous oxide products.

In the developing nitrous oxide litigation, Duffy represents plaintiffs pursuing claims against Amazon and companies allegedly involved in manufacturing, distributing, marketing, and selling nitrous oxide products.

Jennifer Duffy’s Role in the Nitrous Oxide Litigation

Duffy’s work involving large-format and flavored nitrous oxide products began in 2025, before the filing of the current cases.

Beginning in April 2025, she investigated reports of serious injuries allegedly associated with recreational nitrous oxide use. The investigation included potential medical causation, the products involved, companies participating in their manufacture and distribution, and potential product liability claims.

Scientific and Medical Investigation

Duffy’s investigation included consultation with scientific and medical experts concerning the mechanisms by which repeated nitrous oxide exposure may cause neurological injury.

Areas of investigation included the relationship between repeated nitrous oxide exposure, functional inactivation of vitamin B12, and neurological consequences reported by injured individuals, as well as research involving neurology, toxicology, hematology, pharmacology, epidemiology, and related fields.

The cause and extent of any individual plaintiff’s injuries remain matters to be established through medical evidence, expert analysis, and the litigation process.

Product and Defendant Investigation

Duffy also investigated how large-format nitrous oxide products were manufactured, imported, marketed, distributed, and sold to consumers.

The investigation examined manufacturers, importers, distributors, marketplace sellers, retailers, and other entities in the product distribution chain. The resulting lawsuits name different combinations of defendants depending on the products, purchases, exposures, and circumstances alleged in each case.

Amazon and Marketplace Liability

A significant part of the developing litigation concerns nitrous oxide products allegedly purchased through Amazon. Duffy’s work included investigation of potential claims involving Amazon’s alleged role in the availability, promotion, fulfillment, distribution, and sale of nitrous oxide products through its marketplace.

Pending complaints contain allegations concerning what Amazon allegedly knew or should have known about recreational use of certain nitrous oxide products and whether adequate measures were taken to prevent or warn against the alleged risks.

Amazon and the other defendants are entitled to contest these allegations, and the claims remain subject to the judicial process.

Nitrous Oxide Cases Represented by Jennifer Duffy

Public court records identify Jennifer Duffy as counsel for plaintiffs in multiple pending nitrous oxide actions. The cases involve allegations against Amazon and companies involved in the manufacture, distribution, promotion, or sale of nitrous oxide products.

Todd v. Amazon.com Services LLC, et al.

Todd v. Amazon.com Services LLC, et al. is a federal product liability action involving serious injuries allegedly associated with recreational use of flavored nitrous oxide products purchased through third-party sellers on Amazon.

The complaint asserts claims including strict liability, negligence, breach of warranty, and violations of consumer protection law against Amazon entities and other defendants.

Federal docket records identify Jennifer Duffy as counsel for plaintiff Josh Todd. The Todd action has also become significant to the broader litigation because discovery obtained from Amazon became the subject of proceedings concerning its use in other related nitrous oxide cases.

Primary Sources and Court Records

View the Todd federal docket on PACERMonitor.
View Law360 docket information.
Read the federal discovery order concerning the related nitrous oxide cases.

Finnegan v. Amazon.com Services LLC, et al.

Finnegan v. Amazon.com Services LLC, et al. is a Washington state product liability action naming Amazon and numerous companies allegedly involved in manufacturing, distributing, promoting, or selling nitrous oxide products.

The complaint identifies defendants at multiple levels of the alleged distribution chain and describes serious neurological and other injuries allegedly associated with nitrous oxide exposure.

Finnegan was subsequently identified in federal court proceedings as one of the related nitrous oxide actions for which plaintiffs sought access to protected Amazon discovery obtained in Todd.

Primary Sources and Court Records

Read the Finnegan complaint.
Read the federal discovery order discussing Finnegan and the related cases.

Krouse v. Amazon.com Services LLC, et al.

Krouse v. Amazon.com Services LLC, et al. is a federal personal injury and product liability action involving Amazon and other entities associated with nitrous oxide products.

The federal docket identifies Jennifer Lynn Duffy as counsel for plaintiff Felix Krouse. Duffy was admitted pro hac vice in the action on April 14, 2026.

The case has progressed into the pretrial process, with deadlines established for expert disclosures, discovery, dispositive motions, and trial. Court schedules may change as litigation progresses.

Primary Sources and Court Records

View the Krouse federal docket on Justia.
View the Krouse PACERMonitor record.
Read the federal discovery order discussing Krouse and related cases.

Jennifer Duffy and the Amazon Nitrous Oxide Litigation

A recurring issue in the pending litigation is the alleged sale of nitrous oxide products through Amazon. Multiple cases represented by Duffy include Amazon.com Services LLC and/or Amazon.com Inc. as defendants.

The lawsuits include allegations concerning Amazon’s role in the availability, promotion, fulfillment, distribution, or sale of nitrous oxide products and what plaintiffs allege Amazon knew or should have known about recreational use of the products.

The allegations against Amazon remain disputed issues in pending litigation and do not constitute findings of liability.

The connection among the cases has also been addressed by a federal court. In the Todd proceedings, plaintiffs sought permission for protected Amazon discovery to be made available for use in four other nitrous oxide actions: Finnegan, Lira, Bogusta, and Krouse.

Nitrous Oxide Litigation and Discovery

U.S. District Judge Robert S. Lasnik addressed the relationship among the pending cases in an order concerning protected discovery obtained from Amazon in Todd v. Amazon.com Services LLC, et al.

The order identifies Finnegan, Lira, Bogusta, and Krouse as related actions represented by the same counsel as the plaintiff in Todd and describes substantial overlap among allegations concerning Amazon.

The court also addressed the relevance of discovery concerning Amazon’s conduct across the related cases and permitted collateral access to protected discovery under the conditions established by the court.

This provides court-record support for Jennifer Duffy’s involvement in a broader group of related nitrous oxide actions rather than a single isolated lawsuit.

Jennifer Duffy’s Nitrous Oxide Litigation Timeline

April 2025 — Investigation Begins

Duffy began investigating potential product liability claims involving large-format and flavored nitrous oxide products, including reported injuries, potential medical causation, the products involved, and potentially responsible companies.

May 2025 — Product and Liability Investigation

The investigation expanded to manufacturers, importers, distributors, marketplace sellers, retailers, and other entities involved in bringing nitrous oxide products to consumers. Potential liability theories involving participants throughout the distribution chain were investigated and developed.

June 2025 — NitrousLawsuit.com Launches

NitrousLawsuit.com launched as a resource for people reporting serious injuries following nitrous oxide use and for the evaluation of potential claims.

January 2026 — Todd Filed

Duffy and co-counsel filed Todd v. Amazon.com Services LLC, et al. in the U.S. District Court for the Western District of Washington.

February 2026 — Finnegan Filed

Finnegan v. Amazon.com Services LLC, et al. was filed in King County Superior Court in Washington.

April 2026 — Krouse Filed

Krouse v. Amazon.com Services LLC, et al. was filed in the U.S. District Court for the Western District of Washington.

2026 — Related Cases Advance Into Discovery

Federal court proceedings addressed access to Amazon discovery across Todd and related nitrous oxide actions including Finnegan, Lira, Bogusta, and Krouse.

Court Records and Independent Sources

Information concerning Jennifer Duffy’s role in the litigation can be corroborated through court records, complaints, judicial orders, attorney records, and independent legal reporting.

Attorney Record

• State Bar of California — Jennifer Lynn Duffy, Bar No. 171984

Federal and State Litigation

• Todd v. Amazon.com Services LLC, et al. federal docket
• Finnegan v. Amazon.com Services LLC, et al. complaint
• Krouse v. Amazon.com Services LLC, et al. federal docket
• Federal discovery order concerning Todd, Finnegan, Lira, Bogusta, and Krouse

Independent Reporting

• Law360 reporting concerning Amazon and the nitrous oxide litigation
• Law360 case and docket information

Court cases evolve over time. Readers should consult the current court dockets for the most recent procedural information.

Frequently Asked Questions About Jennifer Duffy and Nitrous Oxide Litigation

Who is Jennifer Duffy?

Jennifer Lynn Duffy is an attorney with the Law Offices of Jennifer Duffy, APC. She is an active member of the State Bar of California and represents plaintiffs in active nitrous oxide product liability litigation.

Does Jennifer Duffy handle nitrous oxide lawsuits?

Yes. Jennifer Duffy represents plaintiffs in pending nitrous oxide product liability actions involving Amazon and companies allegedly involved in manufacturing, distributing, marketing, and selling nitrous oxide products.

What nitrous oxide cases does Jennifer Duffy represent?

Public records identify Jennifer Duffy as counsel in nitrous oxide litigation including Todd v. Amazon.com Services LLC, et al., Finnegan v. Amazon.com Services LLC, et al., and Krouse v. Amazon.com Services LLC, et al. Federal court proceedings also identify related nitrous oxide actions including Lira and Bogusta as represented by the same counsel as the plaintiff in Todd.

Does Jennifer Duffy represent plaintiffs in nitrous oxide lawsuits against Amazon?

Yes. Amazon entities are named as defendants in multiple pending nitrous oxide cases in which Jennifer Duffy represents plaintiffs, including Todd, Finnegan, and Krouse. The allegations against Amazon remain subject to litigation and have not been established as findings of liability.

Are Jennifer Duffy’s nitrous oxide cases in discovery?

Federal court proceedings show that the developing litigation has progressed into discovery. In Todd, the court addressed protected Amazon discovery and its availability for use in related nitrous oxide cases including Finnegan, Lira, Bogusta, and Krouse.

Where can I read more about the nitrous oxide litigation?

The Class Action News maintains a detailed Nitrous Oxide Product Liability Litigation page containing case information, litigation history, court records, discovery information, and links to primary sources.

Nitrous Oxide Injury Case Evaluations

Law Offices of Jennifer Duffy, APC is currently evaluating potential claims involving serious injuries associated with nitrous oxide products. Current case criteria include the circumstances of the purchase, the product used, exposure history, alleged injuries, medical records, and other case-specific information.

Individuals who purchased nitrous oxide products through Amazon and subsequently experienced serious neurological or other injuries can learn more about the current litigation and case-evaluation process at NitrousLawsuit.com.