Phan v. Simply Mossy Art: Design Patent Infringement Dismissed After 256 Days
Two individual inventors sued Simply Mossy Art, Inc. in the Northern District of California alleging infringement of design patent USD989355S, which covers a distinctive moss pole design. The court granted dismissal for lack of personal jurisdiction in May 2024, and when plaintiffs failed to file an amended complaint within the 21-day window, the case was closed entirely.
Jurisdictional failure ends moss pole design patent dispute before merits reached
On September 28, 2023, plaintiffs Linh Thi Khanh Phan and Huyen Thi Thanh Phan filed a design patent infringement action against Simply Mossy Art, Inc. in the Northern District of California before Judge Jon S. Tigar. The asserted patent, USD989355S (application number US29/785592), protects the ornamental design of a moss pole — a horticultural support product sold across at least eight Amazon product listings attributed to the defendant.
On May 1, 2024, Judge Tigar granted the defendant’s motion to dismiss, finding that the court lacked personal jurisdiction over Simply Mossy Art, Inc. The court gave plaintiffs 21 days to file an amended complaint that could establish a proper jurisdictional basis. Plaintiffs did not file within that window, and on June 10, 2024, the clerk was directed to enter judgment and close the file. The case was therefore terminated without any adjudication of the infringement merits.
The 256-day duration and pre-merits termination suggest the case may have encountered fundamental threshold problems rather than substantive patent disputes. The public record does not disclose why plaintiffs chose not to amend — possibilities include an inability to cure the jurisdictional defect, a commercial settlement reached informally, or a strategic decision to abandon the action. The patent itself remains in force and could, in principle, be re-asserted in a court with proper jurisdiction.
Filing to Case Dismissed in 256 days
256 days — resolved before trial, typical of jurisdictional dismissals at district level
Case dismissed for lack of jurisdiction: what the outcome means for each party
Dismissed for lack of personal jurisdiction — no merits ruling
The court dismissed the action because it lacked personal jurisdiction over the defendant, not because of any determination on patent validity or infringement. A personal jurisdiction dismissal means the court never evaluated whether USD989355S was infringed or valid. When plaintiffs did not file an amended complaint within the 21-day cure window, the judgment was entered as a matter of procedure. This is a threshold dismissal, not a decision on the patent’s merits.
Procedural — no infringement rulingPatent survives — but re-filing requires a jurisdictionally proper venue
Because dismissal was on jurisdictional grounds rather than the merits, the plaintiffs’ design patent USD989355S remains valid and enforceable. The public record does not specify whether the dismissal was with or without prejudice on the jurisdictional defect. Plaintiffs could potentially re-file in a court with clear jurisdiction over Simply Mossy Art — such as the defendant’s home state — though the window for strategic advantage may have narrowed.
Patent still live — re-filing possibleSimply Mossy Art escapes Northern California lawsuit — not cleared of infringement
Simply Mossy Art, Inc. secured dismissal on a personal jurisdiction argument, meaning the company was not found to have infringed or not infringed USD989355S. This is a procedural win, not a clearance. The defendant remains potentially exposed to a refiled action in a proper forum. Companies in similar positions typically conduct freedom-to-operate analysis promptly to assess ongoing commercial risk from the asserted design patent.
Procedural win — FTO risk remainsDesign patent enforcement in e-commerce: jurisdictional pitfalls are common
This case illustrates a recurring challenge in design patent enforcement against e-commerce sellers: establishing personal jurisdiction over defendants who operate nationally or globally through online marketplaces. Amazon seller disputes frequently raise jurisdiction questions when the defendant has no clear physical presence in the plaintiff’s chosen forum. Design patent holders targeting marketplace competitors should conduct venue analysis before filing to avoid costly threshold failures.
E-commerce design patent riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Linh Thi Khanh Phan | Individual | Individual inventors and design patent holders — holders of USD989355S covering ornamental moss pole designSearch in Eureka ↗ |
| Co-Plaintiff | Huyen Thi Thanh Phan | Individual | Search in Eureka ↗ |
| Defendant | Simply Mossy Art, Inc. | Company | Simply Mossy Art, Inc. — seller of moss pole plant support products via Amazon marketplaceSearch in Eureka ↗ |
| Plaintiff counsel | Curtis H. Fuller | Attorney | Counsel for Linh Thi Khanh PhanSearch in Eureka ↗ |
| Plaintiff counsel | John Steven Ferrell | Attorney | Counsel for Linh Thi Khanh PhanSearch in Eureka ↗ |
| Plaintiff counsel | Robert Joseph Yorio | Attorney | Counsel for Linh Thi Khanh PhanSearch in Eureka ↗ |
| Plaintiff law firm | Carr & Ferrell, LLP | Law Firm | Representing Linh Thi Khanh PhanSearch in Eureka ↗ |
| Defendant counsel | Kyle B. Fleming | Attorney | Counsel for Simply Mossy Art, Inc.Search in Eureka ↗ |
| Defendant law firm | Renner Otto | Law Firm | Representing Simply Mossy Art, Inc.Search in Eureka ↗ |
| Presiding judge | Judge Jon S. Tigar | Judge | California Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s directive to ‘enter judgment and close the file’ following plaintiffs’ inaction confirms this is a final disposition, though it rests entirely on a procedural foundation — lack of personal jurisdiction — rather than any substantive patent ruling. The verdict language does not address infringement, validity, or claim scope of USD989355S. For Simply Mossy Art, this outcome provides no legal clearance on the patent; for the Phan plaintiffs, the patent’s enforceability is preserved but the litigation window in this forum has closed.
USD989355S — Ornamental Design for a Moss Pole Plant Support
USD989355S is a U.S. design patent protecting the ornamental appearance of a moss pole — a tubular or columnar plant support product used primarily for climbing houseplants. Filed under application number US29/785592, design patents under 35 U.S.C. § 171 protect the novel, ornamental characteristics of a functional article, not the functional structure itself. The scope of protection is defined by the drawings, making visual similarity to the claimed design the central infringement test.
In the fast-growing indoor plant accessories market, design patents on moss poles and similar support structures represent a relatively accessible enforcement mechanism for small inventors and product developers. With multiple Amazon ASINs named in the complaint — including B09DP34NFW, B09K3XPVGH, and others — the case suggests the patent holders identified a commercially active competitor. For any company sourcing or designing moss poles, coir poles, or similar climbing plant supports, USD989355S warrants review as an active design right, particularly given the pre-merits termination of the only litigation to date.
Should you run an FTO against USD989355S before launching a moss pole product?
Any company developing, sourcing, or selling moss poles, coir poles, or visually similar plant climbing support products on Amazon or through retail channels should conduct a freedom-to-operate review against USD989355S. The patent remains in force following the Phan v. Simply Mossy Art dismissal, and no invalidity or non-infringement ruling was ever entered. The infringement test for design patents is the ‘ordinary observer’ standard — whether a consumer would view the designs as substantially the same — making visual differentiation analysis essential.
PatSnap Eureka’s FTO Search Agent can map the claim boundaries of USD989355S against your product drawings, identify design-around opportunities, and surface any continuation or related applications in the US29/785592 family. For e-commerce product teams, Eureka can also flag other design patents in the plant support accessories space that may affect your SKU roadmap. Running this analysis before a product launch is significantly less costly than defending a refiled design patent action in a properly chosen venue.
Run a freedom-to-operate analysis on USD0989355S to assess your product’s exposure
Run FTO in Eureka →Similar design patent infringement cases in e-commerce plant products
Explore related design patent disputes involving ornamental product designs enforced against Amazon marketplace sellers in U.S. district courts.
What this case signals for design patent IP in e-commerce and plant products
A jurisdictional dismissal without merits resolution leaves competitive risk unresolved — for both the patent holder and the market.
Jurisdiction strategy is critical before filing against Amazon marketplace sellers
Cases like Phan v. Simply Mossy Art underscore that selecting the right venue for e-commerce defendants requires more than convenience. Online-only or Amazon-native sellers may lack sufficient contacts with any given district. Patent holders should map the defendant’s physical operations, warehouse locations, and incorporation before choosing a filing forum to avoid threshold dismissal.
USD989355S remains enforceable — the competitive threat did not resolve here
The dismissal extinguished the litigation but not the patent. Competitors selling moss poles or similar plant support products should treat USD989355S as an active enforcement risk. The ornamental design scope of a design patent can be surprisingly broad when applied to product categories with limited prior art, and e-commerce sellers with visually similar products remain potentially exposed.
Phan v Simply — key questions answered
The Northern District of California dismissed the case on May 1, 2024, for lack of personal jurisdiction over defendant Simply Mossy Art, Inc. The court gave plaintiffs 21 days to file an amended complaint. When no amended complaint was filed, the clerk entered judgment and closed the file on June 10, 2024. No infringement or validity ruling was issued.
Yes. The dismissal was based on personal jurisdiction, not on the merits of the patent. USD989355S was never adjudicated as invalid or not infringed. The patent remains in force and the holders could potentially re-assert it in a court with proper personal jurisdiction over the defendant or any other accused infringer.
Personal jurisdiction dismissal means the court found it lacked authority over the defendant — typically because the defendant had insufficient contacts with the forum state. It is a threshold procedural ruling and does not constitute any finding on patent validity, claim scope, or infringement. The underlying patent dispute remains legally unresolved.
The complaint identified eight moss pole products sold by Simply Mossy Art, Inc. on Amazon, identified by ASINs: B09DP34NFW, B09K3XPVGH, B09NDRCYFC, B0B1LG3GQ9, B0B2NV54NF, B0B2NWZ3LK, B0B2NY1RMM, and B0BR6KN36B. All products are described as moss poles — plant climbing support structures.
Potentially yes, if a proper jurisdictional basis can be established in another forum. Because the dismissal was on jurisdictional grounds, the substantive patent claim was not adjudicated. However, whether refiling is viable depends on factors including the applicable statute of limitations, the defendant’s connections to alternative venues, and commercial strategy — none of which are disclosed in the public record.
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