Smoore v. A&A Global Imports: E-Cigarette Atomizer Patent Dispute Dismissed Without Prejudice
Shenzhen Smoore Technology Co., Ltd. sued A and A Global Imports, Inc. in the Central District of California asserting four patents covering e-cigarette atomizer technology and liquid-leakage prevention. After 952 days of litigation, the parties jointly stipulated to dismiss all claims without prejudice — leaving Smoore’s enforcement options legally intact.
Smoore’s atomizer patent campaign ends without a merits ruling
On November 2, 2022, Shenzhen Smoore Technology Co., Ltd. — one of the world’s largest vaping device manufacturers — filed suit against A and A Global Imports, Inc. in the U.S. District Court for the Central District of California. Smoore alleged infringement of four patents, most critically US10791762B2 and US10791763B2, which protect atomizer designs capable of preventing liquid leakage caused by air pressure differentials inside e-cigarette liquid reservoirs, and methods for manufacturing atomizing assemblies.
The case concluded on June 11, 2025, when both parties filed a Joint Stipulation to Dismiss. The court ordered all claims dismissed without prejudice, with each side bearing its own legal costs. A dismissal without prejudice means the court never adjudicated the merits of the infringement allegations — Smoore is not legally barred from refiling the same claims against A&A Global or pursuing similar claims against other defendants based on the same patents.
The 952-day duration before a non-merits resolution suggests the parties likely engaged in extended discovery or settlement negotiations before reaching this outcome. The public record does not disclose whether any commercial agreement, licensing arrangement, or business consideration drove the joint dismissal. The absence of a prejudice designation and the mutual cost-bearing order are consistent with a negotiated resolution rather than a unilateral concession by either side.
Filing to Dismissed without Prejudice in 952 days
952 days — above the median for C.D. Cal. patent cases resolved before trial
Dismissed without prejudice: what the joint stipulation means for both parties
Without prejudice: no final adjudication, claims survive
A dismissal without prejudice under Federal Rule of Civil Procedure 41 means the court entered no judgment on the merits. The infringement allegations were never tested, claim construction was never issued, and no invalidity ruling was made. Smoore retains the full legal right to refile these claims — whether against A&A Global or other defendants — subject only to applicable statutes of limitation and any separate private agreements between the parties.
No merits rulingWith or without prejudice? The public record specifies: without
Unlike a dismissal with prejudice — which would permanently extinguish Smoore’s claims and function as a judgment on the merits — this dismissal without prejudice preserves Smoore’s enforcement position. The court order is explicit: claims are dismissed without prejudice. Competitors and licensees should not treat this outcome as a finding that the asserted patents are invalid, unenforceable, or not infringed.
Claims legally intactSmoore exits with patents unimpaired and options open
Smoore’s atomizer patents emerge from this litigation without any adverse ruling. No court has found US10791762B2 or US10791763B2 invalid or not infringed. Smoore bears its own legal costs — suggesting no fee-shifting penalty — and retains freedom to pursue enforcement against A&A Global or other market participants. This outcome is consistent with a patent holder that achieved a satisfactory commercial resolution or chose to conserve litigation resources.
Enforcement options intactA&A Global avoids a merits judgment but faces residual exposure
A&A Global secured the dismissal of all claims without a finding of infringement, which is a commercially meaningful outcome. However, the without-prejudice nature of the dismissal means A&A Global cannot invoke res judicata if Smoore refiles. If the parties reached a private licensing or cease-and-desist agreement — which the public record does not confirm — A&A Global’s ongoing product obligations would be governed by that private arrangement rather than this court order.
No res judicata shieldFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Shenzhen Smoore Technology Co., Ltd. | Company | E-cigarette atomizer manufacturer — holder of US10791762B2 and US10791763B2Search in Eureka ↗ |
| Defendant | A and A Global Imports, Inc. | Company | U.S.-based consumer goods importer facing e-cigarette atomizer infringement claimsSearch in Eureka ↗ |
| Plaintiff counsel | Chao Wang | Attorney | Counsel for Shenzhen Smoore Technology Co., Ltd.Search in Eureka ↗ |
| Plaintiff counsel | Erik T. Koons | Attorney | Counsel for Shenzhen Smoore Technology Co., Ltd.Search in Eureka ↗ |
| Plaintiff counsel | Joanna M. Fuller | Attorney | Counsel for Shenzhen Smoore Technology Co., Ltd.Search in Eureka ↗ |
| Plaintiff counsel | Kiyotoki Natsume | Attorney | Counsel for Shenzhen Smoore Technology Co., Ltd.Search in Eureka ↗ |
| Plaintiff counsel | Robert L. Maier | Attorney | Counsel for Shenzhen Smoore Technology Co., Ltd.Search in Eureka ↗ |
| Plaintiff counsel | Theodore W. Chandler | Attorney | Counsel for Shenzhen Smoore Technology Co., Ltd.Search in Eureka ↗ |
| Plaintiff law firm | Baker Botts LLP | Law Firm | Representing Shenzhen Smoore Technology Co., Ltd.Search in Eureka ↗ |
| Plaintiff law firm | Crowell & Moring LLP | Law Firm | Representing Shenzhen Smoore Technology Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Arash Beral | Attorney | Counsel for A and A Global Imports, Inc.Search in Eureka ↗ |
| Defendant counsel | Bety Javidzad | Attorney | Counsel for A and A Global Imports, Inc.Search in Eureka ↗ |
| Defendant counsel | Kristin Suzanne Webb | Attorney | Counsel for A and A Global Imports, Inc.Search in Eureka ↗ |
| Defendant counsel | Nicholas H. Jackson | Attorney | Counsel for A and A Global Imports, Inc.Search in Eureka ↗ |
| Defendant counsel | R. Tyler Goodwyn , IV | Attorney | Counsel for A and A Global Imports, Inc.Search in Eureka ↗ |
| Defendant counsel | Todd Matthew Malynn | Attorney | Counsel for A and A Global Imports, Inc.Search in Eureka ↗ |
| Defendant law firm | Blank Rome LLP | Law Firm | Representing A and A Global Imports, Inc.Search in Eureka ↗ |
| Defendant law firm | Bryan Cave Leighton Paisner LLP | Law Firm | Representing A and A Global Imports, Inc.Search in Eureka ↗ |
| Defendant law firm | Byan Cave Leighton Paisner LLP | Law Firm | Representing A and A Global Imports, Inc.Search in Eureka ↗ |
| Defendant law firm | Dentons US LLP | Law Firm | Representing A and A Global Imports, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | California Central District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order adopts the parties’ joint stipulation verbatim, dismissing all claims without prejudice and directing each party to bear its own fees and costs. The phrasing ‘all claims asserted in this case’ confirms a clean exit with no surviving counterclaims or partial adjudications. The without-prejudice designation is the operative legal fact: no judgment on the merits was entered, meaning neither party can invoke the doctrine of res judicata based on this order in any future proceeding involving the same patents.
US10791762B2 — E-Cigarette Atomizer Liquid Leakage Prevention Technology
US10791762B2 (application no. 15/740657) and US10791763B2 (application no. 15/953603) are the commercially significant patents at the center of this dispute. Both protect atomizer technology for electronic cigarettes — specifically, designs capable of preventing liquid leakage caused by air accumulation inside liquid reservoirs, and methods for manufacturing the atomizing assemblies used in these devices. These patents sit at the core of vaping hardware functionality, addressing a persistent engineering challenge in e-cigarette design that directly affects product quality and user safety.
For competitors and hardware manufacturers in the vaping sector, these patents represent meaningful design constraints. Smoore’s status as a major global OEM supplier means its patent portfolio broadly covers manufacturing approaches widely adopted across the industry. Companies sourcing, importing, or distributing e-cigarette atomizers in the U.S. market — particularly through the California import channel — should assess whether their product architectures fall within the claim scope of these patents, as Smoore has demonstrated willingness to enforce them through multi-year U.S. litigation.
Should you run an FTO against US10791762B2 and US10791763B2?
Any company designing, importing, or distributing e-cigarette atomizers in the United States should treat these patents as active enforcement risks. Smoore pursued this case for over 950 days before a non-merits exit — signalling genuine enforcement intent. R&D teams working on liquid reservoir management, leakage prevention mechanisms, or atomizer assembly processes should specifically map their designs against the independent claims of both US10791762B2 and US10791763B2 before product launch or U.S. market entry.
PatSnap Eureka’s FTO Search Agent can rapidly generate a claim-level freedom-to-operate landscape across Smoore’s full atomizer patent family, identify prior art that could support design-around strategies, and flag related continuations or divisionals that may extend the protection perimeter. For in-house IP teams managing hardware supplier relationships, Eureka’s portfolio monitoring tools can alert you to new Smoore filings before they become enforcement actions.
Run a freedom-to-operate analysis on US1903146969 to assess your product’s exposure
Run FTO in Eureka →Similar E-Cigarette Atomizer Patent Cases in U.S. District Courts
Cases involving e-cigarette atomizer and vaping hardware patents litigated in U.S. district courts, including C.D. Cal. enforcement actions by device manufacturers.
What this case signals for the e-cigarette atomizer IP landscape
Smoore’s litigation posture in C.D. Cal. suggests an active enforcement strategy around core atomizer technology — even where individual cases resolve without merits rulings.
Without-prejudice exits preserve a patent holder’s enforcement leverage
Companies importing or distributing e-cigarette hardware should not treat this dismissal as IP clearance. Smoore’s atomizer patents remain valid, enforceable, and unchallenged on the merits. A refiling — or parallel action against a different importer — remains a live possibility. Distributors in this product category should confirm FTO status independently.
Joint stipulations after 950+ days typically signal negotiated resolution
When both parties agree to dismiss after nearly three years, the outcome typically reflects a negotiated commercial arrangement rather than a defendant prevailing on invalidity or non-infringement. The mutual cost-bearing structure reinforces this reading. IP teams tracking Smoore’s enforcement activity should treat this case as resolved — not abandoned.
Shenzhen v A — key questions answered
Shenzhen Smoore Technology sued A and A Global Imports in the C.D. Cal. for infringement of four patents covering e-cigarette atomizer technology. After 952 days, both parties filed a Joint Stipulation to Dismiss. The court dismissed all claims without prejudice on June 11, 2025, with each party bearing its own costs. No merits ruling was issued.
A dismissal without prejudice means the court made no finding on whether A&A Global infringed Smoore’s patents or whether the patents are valid. Smoore retains the legal right to refile the same claims. The patents US10791762B2 and US10791763B2 remain valid and enforceable, and no adverse ruling affects their scope or strength.
Smoore asserted four patents: US10791762B2 (atomizer preventing liquid leakage from air in e-cigarette reservoirs), US10791763B2 (electronic cigarette atomizer assembly manufacturing method), and two additional patents with application numbers US1903146969 and US1905292254. The two US10791 patents were the primary commercially relevant assertions.
The court order itself does not restrict A&A Global’s future conduct — it merely dismisses the litigation. However, the parties may have entered into a private licensing or settlement agreement that imposes ongoing obligations. The public record does not disclose any such private terms. A&A Global does not have res judicata protection against a future Smoore refiling.
The 952-day duration before a joint voluntary dismissal is consistent with extended discovery, claim construction proceedings, or prolonged settlement negotiations. The public record does not specify the precise cause of the extended timeline. The mutual cost-bearing structure and joint stipulation format suggest the resolution was negotiated rather than driven by a litigation milestone such as a summary judgment ruling.
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