Inhale, Inc. v. Gravitron, LLC — Summary Judgment for Defendant After 6+ Years
Inhale, Inc. sued Gravitron, LLC in the Western District of Texas alleging infringement of US8393563B2, a patent covering a tobacco grinder with windows, by Gravitron’s GRAV Grinder. After more than 2,484 days of litigation, Judge Alan D. Albright granted summary judgment of non-infringement in Gravitron’s favor, ending the case without any invalidity determination.
Six-Year Grinder Patent Battle Ends in Defendant’s Summary Judgment Win
Inhale, Inc. filed this patent infringement action on September 6, 2018 in the Western District of Texas, asserting US8393563B2 — a patent covering a tobacco grinder featuring windows — against Gravitron, LLC’s commercially sold GRAV Grinder product. The case was assigned to Judge Alan D. Albright, whose Waco docket became one of the most prominent patent litigation venues in the United States during this period. Inhale alleged that Gravitron’s product embodied the claimed design and functional elements of its patented grinder.
On August 20, 2024, the Court granted Gravitron’s motion for summary judgment of non-infringement, finding that Inhale had failed to establish that the GRAV Grinder met the claim limitations of US8393563B2. The Court exercised its discretion to decline ruling on Gravitron’s parallel invalidity summary judgment motion, denying it as moot. Inhale’s subsequent motion for reconsideration was denied on December 12, 2024. Final judgment was entered for Gravitron on the infringement issue, with Gravitron’s remaining counterclaims dismissed without prejudice.
The 2,484-day duration of this proceeding is notable — even for a complex patent dispute — suggesting protracted claim construction disputes, discovery battles, or procedural complications typical of the Albright docket during its peak caseload years. The Court’s decision to leave invalidity undecided means US8393563B2 survives as an enforceable patent, and Inhale is not judicially precluded from asserting it against other parties. The public record does not disclose whether a settlement was reached on ancillary matters or what drove the extended timeline.
Filing to Dismissed without Prejudice in 2484 days
6.8 years in litigation — well above the median for patent cases in W.D. Texas
Summary judgment for Gravitron: what the ruling means for both parties
Summary judgment of non-infringement: no trial required
Summary judgment of non-infringement is granted when no genuine dispute of material fact exists and the defendant is entitled to judgment as a matter of law. Here, the Court found that Inhale could not demonstrate that Gravitron’s GRAV Grinder met the claim limitations of US8393563B2. Importantly, the invalidity of the patent was never adjudicated — the Court declined to reach that question, treating it as moot given the non-infringement finding.
No trial; decided on the papersInhale’s patent survives — but enforcement against Gravitron is blocked
Because the Court ruled solely on non-infringement and did not invalidate US8393563B2, Inhale retains an enforceable patent. The patent can still be asserted against different products or defendants whose designs do meet the claim limitations. However, Inhale lost its direct enforcement action against Gravitron’s GRAV Grinder, and the reconsideration motion was denied, leaving the judgment final at the district court level absent an appeal.
Patent enforceable but not against GRAVGravitron wins without invalidity shield — a mixed strategic result
Gravitron secured a complete defense against Inhale’s infringement claims without needing a ruling on patent validity. While this outcome protects the GRAV Grinder from this specific litigation, it does not invalidate US8393563B2, meaning Gravitron may face renewed scrutiny if it releases products with different designs that more closely track the patent’s claims. Gravitron’s remaining counterclaims were dismissed without prejudice, preserving potential future options.
Protected — but no invalidity ruling obtainedPatent remains a live threat in the smoking accessories market
For competitors in the consumer tobacco and cannabis accessory grinder space, US8393563B2 remains valid and enforceable. The non-infringement ruling turned on Gravitron’s specific product design, and companies marketing grinders with window features should conduct freedom-to-operate analysis. The outcome suggests design-around strategies can succeed, but the six-year litigation timeline underscores the commercial cost of relying solely on that defense.
FTO recommended for grinder competitorsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Inhale, Inc. | Company | Consumer smoking accessories patent holder — holder of US8393563B2Search in Eureka ↗ |
| Defendant | Gravitron, LLC | Company | Gravitron, LLC — maker of the GRAV Grinder, consumer smoking accessories brandSearch in Eureka ↗ |
| Plaintiff counsel | Bill Cobb | Attorney | Counsel for Inhale, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Carly Elizabeth Barton | Attorney | Counsel for Inhale, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Edward F. Kaye | Attorney | Counsel for Inhale, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Eva C. Ramos | Attorney | Counsel for Inhale, Inc.Search in Eureka ↗ |
| Plaintiff counsel | J. Hampton Skelton | Attorney | Counsel for Inhale, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Jenny L. Smith | Attorney | Counsel for Inhale, Inc.Search in Eureka ↗ |
| Plaintiff counsel | Louis F. Teran | Attorney | Counsel for Inhale, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Braun & Gresham | Law Firm | Representing Inhale, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Cobb & Counsel, PLLC | Law Firm | Representing Inhale, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Lubbock Power & Light | Law Firm | Representing Inhale, Inc.Search in Eureka ↗ |
| Plaintiff law firm | SLC Law Group | Law Firm | Representing Inhale, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Skelton & Woody PLLC | Law Firm | Representing Inhale, Inc.Search in Eureka ↗ |
| Defendant counsel | Ciara Rebecca Perritano | Attorney | Counsel for Gravitron, LLCSearch in Eureka ↗ |
| Defendant counsel | James G. Ruiz | Attorney | Counsel for Gravitron, LLCSearch in Eureka ↗ |
| Defendant counsel | Mateo Z. Fowler | Attorney | Counsel for Gravitron, LLCSearch in Eureka ↗ |
| Defendant counsel | Michael D. Karson | Attorney | Counsel for Gravitron, LLCSearch in Eureka ↗ |
| Defendant counsel | Tom Van Arsdel | Attorney | Counsel for Gravitron, LLCSearch in Eureka ↗ |
| Defendant law firm | MZF Law Firm PLLC | Law Firm | Representing Gravitron, LLCSearch in Eureka ↗ |
| Defendant law firm | Winstead PC | Law Firm | Representing Gravitron, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Alan D Albright | Judge | Texas Western District CourtSearch in Eureka ↗ |
Official order — verbatim text
The Court’s order reflects a deliberate scope-limiting choice: by granting summary judgment solely on non-infringement and declining to adjudicate invalidity, Judge Albright avoided rendering any opinion on the patent’s legal validity. This is a permissible exercise of judicial economy under Federal Circuit guidance. For Inhale, the ruling is a litigation loss but not a patent loss — US8393563B2 emerges intact. For Gravitron, the outcome is protective but not definitive; absent an invalidity ruling, no estoppel forecloses a future infringement claim against redesigned products.
US8393563B2 — Tobacco Grinder with Windows
US8393563B2 covers a tobacco grinder incorporating window features — transparent or aperture-based elements integrated into the grinder body that allow visual inspection of the grinding chamber or contents. The patent was filed under application number US12/980330. This design-functional patent sits at the intersection of consumer product aesthetics and utility, covering both the structural configuration and the visual access element that distinguishes it from conventional opaque grinder designs common in the smoking accessories market.
For the smoking accessories sector — which has expanded significantly alongside legal cannabis markets — patents covering grinder design and functionality carry meaningful commercial weight. The GRAV brand occupies a prominent position in the premium smoking accessories segment, making US8393563B2 a strategically targeted asset. The patent’s survival through this litigation without an invalidity ruling means it retains deterrent value against competitors whose products feature analogous window or transparent chamber elements, and Inhale may seek to leverage it in future enforcement actions.
Should you run an FTO against US8393563B2?
Any company designing, manufacturing, or importing tobacco or cannabis herb grinders with transparent panels, viewing windows, or aperture features in the grinding chamber should treat US8393563B2 as an active clearance risk. This case confirms the patent is not invalidated — and that Inhale is willing to litigate aggressively, having pursued this case for nearly seven years. OEMs supplying branded accessories, white-label grinder manufacturers, and direct-to-consumer smoking accessory brands are all within the potential enforcement perimeter.
PatSnap Eureka’s FTO Search Agent can map your grinder product’s design against the claim limitations of US8393563B2 — identifying freedom-to-operate gaps, prior art candidates, and design differentiation opportunities in minutes. Eureka’s claim-by-claim analysis tool surfaces comparable prosecution history, related family members, and litigation outcomes to help your IP team make fast, defensible clearance decisions before product launch.
Run a freedom-to-operate analysis on US8393563B2 to assess your product’s exposure
Run FTO in Eureka →Similar smoking accessories patent infringement cases in W.D. Texas
Cases involving consumer smoking accessories and grinder design patents litigated before W.D. Texas district courts, including other Judge Albright docket matters.
What this case signals for the smoking accessories IP landscape
A six-year patent dispute over grinder design resolved on non-infringement alone — leaving the patent intact and the market on notice.
Non-infringement wins leave patents alive — monitor continued enforcement
Because Judge Albright’s ruling did not touch validity, US8393563B2 remains an active enforcement tool for Inhale. Companies in the smoking accessories space should track Inhale’s litigation activity and conduct periodic claim mapping exercises against their own grinder product lines, particularly products featuring transparent or window-style chambers.
Design-arounds can work — but the litigation cost was 6+ years
Gravitron’s success on non-infringement suggests its GRAV Grinder design diverged sufficiently from the patent claims. For R&D teams developing competing grinder products, this signals that design differentiation is a viable but expensive strategy — Gravitron spent over six years in litigation to prove it. Early FTO clearance is far more cost-efficient than post-suit design-around argumentation.
Inhale v Gravitron — key questions answered
The court granted summary judgment of non-infringement in favor of defendant Gravitron, LLC on August 20, 2024. Inhale’s motion for reconsideration was denied on December 12, 2024. Final judgment was entered for Gravitron, with its remaining counterclaims dismissed without prejudice. The patent US8393563B2 was not invalidated.
No. The Court explicitly declined to address Gravitron’s invalidity summary judgment motion, denying it as moot after finding non-infringement. US8393563B2 remains a valid and enforceable patent. This means Inhale could assert it against other defendants or in future litigation involving products that more closely match the patent’s claim limitations.
US8393563B2 is a U.S. patent covering a tobacco grinder with window features — transparent or aperture elements that allow visual inspection of the grinding chamber. The patent application number is US12/980330. It was asserted against Gravitron’s GRAV Grinder product in this case. The patent sits at the intersection of consumer product design and functional utility in the smoking accessories category.
The public record does not fully disclose the reasons for the 2,484-day duration. However, Judge Alan D. Albright’s Western District of Texas docket was among the most congested patent dockets in the country during the 2018–2024 period, with scheduling delays common across many assigned cases. Procedural complexity, claim construction disputes, and the volume of summary judgment briefing likely contributed to the extended timeline.
The judgment of non-infringement bars Inhale from reasserting infringement of US8393563B2 against the same GRAV Grinder product under claim preclusion principles. However, Inhale may pursue infringement claims against Gravitron if it introduces a materially different product, or assert the patent against other defendants. Because invalidity was not decided, the patent remains an active enforcement tool more broadly.
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