DLHBowles v. Jiangsu Riying Electronics: Ball Mount Spray Nozzle Patent Settled
DLHBowles filed a patent infringement action against Jiangsu Riying Electronics Co., Ltd. in the Ohio Northern District Court, asserting US8662421B2 covering a ball mount spray nozzle device. The parties resolved all claims and counterclaims through settlement after 939 days of litigation.
Ball mount spray nozzle patent dispute reaches settlement after 939 days
DLHBowles initiated this patent infringement action on January 21, 2021, in the U.S. District Court for the Northern District of Ohio, asserting US8662421B2 against Jiangsu Riying Electronics Co., Ltd., a Chinese electronics manufacturer. The patent covers a ball mount spray nozzle device, placing this dispute squarely in the precision fluid dispensing and automotive/industrial spray systems technology sector.
The recorded basis of termination is 'Case Settled.' The docket order states that the parties entered into a stipulation pursuant to Fed. R. Civ. P. 41(a)(1)(A)(ii), dismissing with prejudice all claims and counterclaims that were asserted or could have been asserted, with each party bearing its own attorney costs, litigation expenses, and court costs. The specific commercial or licensing terms underlying the settlement are not disclosed in the available record.
The case ran for 939 days — approaching the outer bound of a typical district court patent resolution timeline — before the parties reached agreement. What drove the timing and the ultimate resolution cannot be determined from the public record. The mutual cost-bearing arrangement and with-prejudice dismissal of all claims, including counterclaims, suggests the parties drew a comprehensive line under the dispute, though any underlying business terms remain confidential.
See Complete Case & Patent Analysis →Filing to Case Settled in 939 days
939 days from filing to close — over two and a half years of active litigation
US8662421B2 — Ball Mount Spray Nozzle Device
Any R&D team or product manager working on ball mount spray nozzle assemblies, fluid dispensing mechanisms, or related camera/sensor wash systems should treat US8662421B2 as a live enforcement risk. DLHBowles demonstrated willingness to litigate this patent internationally and to pursue it for nearly three years. The patent has not been invalidated. New entrants, component importers, and OEM suppliers in this space are particularly exposed.
Official order — verbatim text
The stipulation records a mutual, with-prejudice dismissal of all claims and counterclaims under Fed. R. Civ. P. 41(a)(1)(A)(ii), with each party bearing its own costs. No merits determination was made by the court. The phrasing extinguishes re-litigation risk for both sides on the specific claims raised, but leaves the validity and infringement scope of US8662421B2 unresolved as a matter of judicial record.
Case settled: what the agreed resolution means for both parties
Rule 41 stipulated dismissal with prejudice on settlement
The case closed via a Fed. R. Civ. P. 41(a)(1)(A)(ii) stipulation — a jointly filed notice of dismissal signed by all parties. Dismissal is with prejudice, meaning neither party may re-litigate the same claims or counterclaims. This mechanism is common in settled patent disputes and requires no court approval to take effect, though it is entered on the docket as a final disposition.
Binding, final dismissalDLHBowles closes infringement claims without public adjudication
DLHBowles secured a with-prejudice dismissal of all claims it asserted, preventing Jiangsu Riying from relitigating infringement or invalidity on the same facts. However, because the case settled without a court ruling on the merits, US8662421B2 has not been judicially validated or invalidated. The specific terms of any commercial resolution are not disclosed in the available record.
Patent not adjudicated on meritsJiangsu Riying exits with all counterclaims also dismissed with prejudice
The stipulation dismisses all counterclaims Jiangsu Riying asserted or could have asserted — including any invalidity or non-infringement defenses pursued as affirmative counterclaims. This forecloses those specific avenues against DLHBowles. Each party bears its own costs, suggesting neither side conceded a purely financial advantage in the procedural resolution. Substantive commercial terms, if any, are not in the public record.
Counterclaims extinguishedUS8662421B2 remains in force — enforcement posture unchanged for the sector
Settlement without merits adjudication leaves US8662421B2 fully enforceable. Competitors and component manufacturers in the ball mount spray nozzle and fluid dispensing space should note that the patent survived litigation without being invalidated. DLHBowles retains the right to assert the patent against other parties. Companies sourcing or manufacturing similar spray nozzle assemblies should assess their exposure to this patent.
Patent remains enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Dlhbowles | Individual | /Search in Eureka ↗ |
| Defendant | Jiangsu Riying Electronics Co., Ltd. | Company | /Search in Eureka ↗ |
| Plaintiff counsel | Andrew D. Gordon-Seifert | Attorney | Counsel for DlhbowlesSearch in Eureka ↗ |
| Plaintiff counsel | David B. Cupar | Attorney | Counsel for DlhbowlesSearch in Eureka ↗ |
| Plaintiff counsel | Lidia C. Mowad | Attorney | Counsel for DlhbowlesSearch in Eureka ↗ |
| Plaintiff counsel | Mark J. Masterson | Attorney | Counsel for DlhbowlesSearch in Eureka ↗ |
| Plaintiff counsel | Matthew J. Cavanagh | Attorney | Counsel for DlhbowlesSearch in Eureka ↗ |
| Plaintiff law firm | Benesch, Friedlander, Coplan & Aronoff LLP (Cleveland) | Law Firm | Representing DlhbowlesSearch in Eureka ↗ |
| Plaintiff law firm | McDonald Hopkins LLC (Cleveland) | Law Firm | Representing DlhbowlesSearch in Eureka ↗ |
| Defendant counsel | Ava M. Abner | Attorney | Counsel for Jiangsu Riying Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | David A. Kunselman | Attorney | Counsel for Jiangsu Riying Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Deborah J. Michelson | Attorney | Counsel for Jiangsu Riying Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant counsel | Rachael L. Rodman | Attorney | Counsel for Jiangsu Riying Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Buckley King LPA (Cleveland) | Law Firm | Representing Jiangsu Riying Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Frost, Brown & Todd LLC (Cincinnati) | Law Firm | Representing Jiangsu Riying Electronics Co., Ltd.Search in Eureka ↗ |
| Defendant law firm | Ulmer & Berne LLP (Columbus) | Law Firm | Representing Jiangsu Riying Electronics Co., Ltd.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Ohio Northern District CourtSearch in Eureka ↗ |
R&D signals in the ball mount spray nozzle and fluid dispensing space
Patent portfolio activity around DLHBowles and Jiangsu Riying points to ongoing innovation in precision spray and fluid dispensing — key intelligence for product and IP teams.
DLHBowles's spray nozzle patent family and filing activity
US8662421B2 may be one asset in a broader DLHBowles portfolio covering fluid dispensing, ball-joint nozzle mounts, and automotive wash systems. Mapping continuation and divisional filings around this patent can reveal the true claim perimeter and identify whether adjacent product configurations are separately protected — critical intelligence for any competitor developing in this space.
Portfolio mappingFiling trends in ball-joint nozzle and precision spray technology
The ball mount spray nozzle segment — covering automotive camera wash, sensor cleaning, and HVAC fluid delivery — has seen growing patent activity driven by the rise of ADAS sensor arrays requiring active cleaning. Monitoring filing trends in this domain can identify which players are building IP positions and where white space exists for new design approaches.
Filing trend analysisJiangsu Riying's IP position in fluid dispensing components
Jiangsu Riying Electronics is a Chinese OEM-level component manufacturer. Assessing its own patent filings — in China and internationally — in spray nozzle, solenoid valve, or fluid control technology reveals the strength of its defensive IP position and whether it is building a portfolio to support future export market activity or freedom-to-operate in Western markets.
Competitor patent auditAdjacent R&D opportunities near ball mount spray nozzle IP
Design-around innovation near US8662421B2 may be viable in nozzle actuation mechanisms, mounting geometries that avoid ball-joint configurations, or smart/adaptive spray control systems. These adjacencies — particularly for ADAS wash and industrial IoT fluid management — represent potential white-space filing opportunities where competitors can build independent IP positions.
White-space opportunitySimilar spray nozzle and fluid dispensing patent cases in U.S. district courts
Explore comparable patent infringement actions involving spray nozzle and fluid dispensing technologies litigated in U.S. district courts, including cross-border enforcement against overseas manufacturers.
What this case signals for the fluid dispensing and spray nozzle IP landscape
A cross-border patent dispute resolved quietly — but the enforceability of US8662421B2 is unchanged and the risk calculus for competitors remains live.
US8662421B2 survived litigation without invalidation — monitor it actively
The patent was never ruled upon on the merits. It remains fully enforceable. Any company designing, importing, or distributing ball mount spray nozzle assemblies should conduct a freedom-to-operate analysis against this patent before entering or expanding in this product category.
Cross-border enforcement against Chinese manufacturers is viable in Ohio NDC
DLHBowles successfully brought a Chinese electronics manufacturer into U.S. district court proceedings and obtained a with-prejudice resolution. This signals that Ohio Northern District Court is a credible venue for pursuing infringement actions against overseas component suppliers in fluid dispensing and automotive parts sectors.
Dlhbowles v Jiangsu — key questions answered
The case settled. The recorded basis of termination is 'Case Settled.' The docket records a stipulation under Fed. R. Civ. P. 41(a)(1)(A)(ii) dismissing all claims and counterclaims with prejudice, with each party bearing its own costs. The specific commercial terms of the settlement are not disclosed in the available public record.
DLHBowles asserted US8662421B2, a patent covering a ball mount spray nozzle device. The patent relates to precision fluid dispensing mechanisms where a nozzle assembly is mounted via a ball joint allowing directional adjustment. The case was filed in the Northern District of Ohio on January 21, 2021.
No. The case settled before any court ruling on the merits of infringement or validity. US8662421B2 was neither invalidated nor judicially confirmed as valid. It remains an enforceable U.S. patent, and DLHBowles retains the right to assert it against other parties.
The with-prejudice dismissal means Jiangsu Riying cannot re-litigate the specific claims and counterclaims asserted in this action. Any invalidity counterclaims it raised are also extinguished with prejudice. The company may not revive those specific claims against DLHBowles in future proceedings based on the same facts.
The case ran for 939 days, from filing on January 21, 2021 to closure on August 18, 2023. This duration — approaching three years — is toward the longer end for a single-patent district court infringement action and suggests substantive contested proceedings preceded the settlement.
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