US Patent US10555556B2 declared invalid in infringement case

Sep.21.2022
US Patent US10555556B2 declared invalid in infringement case
Philip Morris lost patent infringement case in the US and its patent was invalidated, impacting e-cigarette product development.

Recently, in Case No.1:20-cv-0039-LO-TCB, Phimosis International accused R.J. Reynolds of patent infringement with No.US10555556B2, but the patent has since been invalidated in the U.S. after a lengthy legal battle that ended in Phimosis International's defeat. What does this ruling mean for the development of domestic electronic cigarette products?


Author bio: Lawyer Tang Shunliang is a specialized attorney in the field of new tobacco at the Beijing Zhong Lun Wen De Kunming law firm.


Part 1: Case Review


In case number 1:20-cv-0039-LO-TCB, R.J. Reynolds has brought a lawsuit against Phimow International for copyright infringement. Phimow International has responded by countersuing R.J. Reynolds for a series of patent infringement cases, highlighting the intense nature of the patent litigation between these two parties.


The case identifier is 1:20-cv-0039-LO-TCB.


On June 15, 2022, the Eastern District Court of Virginia ruled that R.J. Reynolds had infringed on two electronic cigarette technology patents owned by Philip Morris, identified as No. US9814265 and No. US10104911. As a result, they were ordered to pay $10.76 million in damages.


In this case, Phemo International has presented several weapons in its charge of infringement, including the patent No. US10555556B2, and has provided extensive evidence and reasoning to accuse VUSE VIBE of continuous infringement since June 29, 2022, specifically violating the first right claim of the patent. If this charge is proven, the compensation amount will not be limited to 10.76 million.


The R.J. Reynolds company has responded by stating that the patent should not have been granted. This is why there is now news of the recent invalidation of the patent.


Phimo International files a counter lawsuit against R.J. Reynolds for patent infringement of No.US10555556B2.


In its lawsuit, Philip Morris International compared its product VUSE VIBE to the patent No.US10555556B2 and argued that VUSE VIBE falls within the protection scope of "claim 1". However, the lawsuit fails to provide a comparison of whether VUSE VIBE contains the "first and second capillary" related technical features. Even if the patent is not found to be "invalid", it may still not constitute infringement (interested readers can download and read the legal documents).


Previously, Philip Morris International launched a patent lawsuit against British American Tobacco in Germany using patent "EP2282649," which is similar to a capillary oil guide. The court ruled in favor of British American Tobacco, stating that there was no infringement, resulting in Philip Morris International losing the case.


What is the technology solution protected by Claim 1 of patent No.US10555556B2?


A cylinder (commonly known as an e-cigarette) used in an aerosol generation system comprises a liquid storage portion that includes a pod container to maintain the liquid aerosol formation matrix. The pod container has an opening and at least two fluidly connected components (oil guiding components) form the liquid storage portion. All e-liquids need a corresponding storage component.


The first component of the liquid storage section includes:


The first capillary material, including various oil-conducting materials, fiber such as cotton, porous materials like ceramics, is used to evenly distribute the heat generating element for the e-cigarette. It is located near the opening of the shell. The second capillary material comes into contact with the first material and is separated from the opening by the first material (and does not come into contact with the heating sheet). Additionally, the second component of the liquid storage portion includes:


This refers to a device that utilizes an aerosol-forming matrix (e-liquid) to maintain a liquid state and supply the resulting aerosol-forming matrix to a container (e-liquid reservoir) made of a second capillary material. The device includes a fluid-permeable heating element (e-liquid permeator) that extends over the opening of the shell and the average pore size or porosity of the first capillary material is smaller than that of the second capillary material.


The key issue addressed by this patent is:


By setting up two guiding capillaries, the e-liquid is evenly distributed and atomized in the heater, ensuring no waste or reductions in e-liquid due to a decrease in volume or change in angle. This guarantees a high-quality vaping experience with every puff.


2.2 Common oil leakage issues have been resolved. However, the corresponding Mesh products still suffer from oil leakage problems.


The key technology of this plan is:


The use of two different types of oil-conducting materials achieves an even distribution of e-liquid to the heating element according to the frequency of vaping, resulting in improved vaporization efficiency. Claim 1 is not limited to a specific structural form and various forms and materials of oil-conducting materials and heaters are given as examples, making the scope of the invention broad. The technical solution provided in the manual is worth studying and learning from, and perhaps even finding better improvements. To aid readers in analysis, the figures have been marked by the author.


Figure 1 shows the overall technical plan, taking reference from Mesh and IQOS VEEV e-cigarettes. The core principle of oil storage, oil delivery and atomization is presented in Figure 2. Figure 3 illustrates the axial flow of oil passing through the heater and being uniformly released as smoke through the porous ceramic. Figure 4 demonstrates the radial oil delivery system (similar to traditional cotton core + metal wire) for atomization.


Closing Remarks


The ongoing patent wars between two tobacco giants indicate that both HNB and electronic vaporizer companies may continue to face legal challenges. It is possible that tobacco corporations have not yet turned their attention to Chinese electronic cigarette manufacturers, possibly due to other priorities.


However, their weapons arsenal is indeed very extensive, their research and development speed is very fast, and they are constantly laying out new patents.


Attachment 1: Global Distribution of Patents in the Same Cluster


Attachment 2: Patent Texts from Various Countries


Attachment 3: US Patent and Trademark Office invalidity decision.


Statement:


1. This article is intended for internal research and communication within the industry. It does not provide any investment or brand recommendations. This article should not be used as the basis for any investments. 2. The data and analysis conclusions mentioned in this article have not been confirmed in writing with the companies involved. Therefore, all information should be verified with official company releases.


This article is an original creation of 2FIRSTS Technology Co. Ltd. in Shenzhen. The copyright and usage rights belong to the company and no individual or organization is allowed to use, reproduce or copy the content for commercial purposes without authorization. Any infringement of the company's copyright will be subject to legal action.



Disclaimer

This article is provided solely for professional research, industry discussion, and informational purposes. Any references to brands, companies, products, technologies, or policies are made for factual reporting and analytical purposes only, and do not constitute endorsement, recommendation, promotion, or advertising by 2Firsts.

Nicotine-containing products, including but not limited to cigarettes, e-cigarettes, heated tobacco products, and nicotine pouches, carry significant health risks. Readers are responsible for complying with all applicable laws and regulations in their respective jurisdictions, including age restrictions and access limitations.

The information contained in this article should not be regarded as investment, legal, medical, regulatory, or commercial advice. While 2Firsts strives to ensure the accuracy and reliability of its content, it does not assume liability for any direct or indirect loss arising from errors, omissions, inaccuracies, or reliance on the information contained herein.

This article is not intended for individuals below the legal age for accessing tobacco or nicotine-related information in their jurisdiction.

 

Copyright Notice

This article is either original content produced by 2Firsts or content reproduced, translated, summarized, or adapted from third-party sources with attribution where applicable. The intellectual property rights of the original content remain with 2Firsts or the respective original rights holders.

No individual or organization may copy, reproduce, distribute, republish, modify, translate, or otherwise use this content without prior authorization. Any unauthorized use may result in legal action.

For copyright-related inquiries, corrections, or removal requests, please contact: info@2firsts.com.

 

AI-Assisted Translation and Editing Notice

Portions of this article may have been translated, edited, or reviewed with the assistance of artificial intelligence tools to improve efficiency and readability. Due to the limitations of AI-assisted translation and editing, discrepancies, omissions, or inaccuracies may exist when compared with the original source.

Where applicable, readers are advised to refer to the original source for the most complete and accurate information. If you identify any errors or believe that any content infringes upon your rights, please contact us at info@2firsts.com, and we will review and address the matter promptly.

FDA Launches Elsa 4.0 and Completes HALO Data Platform Consolidation
FDA Launches Elsa 4.0 and Completes HALO Data Platform Consolidation
The U.S. Food and Drug Administration announced on May 6 that it has advanced its modernization initiative by launching Elsa 4.0, an upgraded internal AI tool, and consolidating more than 40 application and submission data sources, systems and portals into a new platform called HALO. FDA said the integration of HALO and Elsa will allow staff to query data and build workflows without manually uploading documents in each chat.
May.07 by 2FIRSTS.ai
Shunhao Shares Reports 2025 Revenue of RMB 1.188 Billion, While Q1 2026 Net Profit Rises 49.94% and New Tobacco Operations Continue
Shunhao Shares Reports 2025 Revenue of RMB 1.188 Billion, While Q1 2026 Net Profit Rises 49.94% and New Tobacco Operations Continue
Shunhao Shares’ 2025 annual report summary and first-quarter 2026 report show that the company recorded 2025 revenue of RMB 1.188 billion, down 21.78% year on year, while net profit attributable to shareholders rose 30.00% to RMB 58.94 million. In the first quarter of 2026, revenue was RMB 291.51 million, down 10.34% year on year, while attributable net profit rose 49.94% to RMB 19.98 million.
Apr.29 by 2FIRSTS.ai
Canada Faces Growing Debate as Youth Nicotine Pouch Use Reaches 34.8%
Canada Faces Growing Debate as Youth Nicotine Pouch Use Reaches 34.8%
New Canadian research shows that 34.8% of people aged 17 to 27 have tried nicotine pouches, up more than fourfold from 7.6% in 2022. The findings come as Conservative politicians, Alberta’s government and the tobacco industry push Ottawa to relax current restrictions on pouch sales.
Jun.12
How AI Is Rewriting the Talent Playbook for the Nicotine Industry: JTI’s Case
How AI Is Rewriting the Talent Playbook for the Nicotine Industry: JTI’s Case
AI is moving from a back-office tool to a core organizational capability in the nicotine industry. Based on JTI’s responses, this 2Firsts feature examines how AI is reshaping talent strategy, internal mobility, decision-making and human accountability as global tobacco companies compete in the shift toward new nicotine categories.
Jun.17
Product | Geek Bar BURJ 80K Extends High-Puff Competition Into Hookah-Style DTL Use
Product | Geek Bar BURJ 80K Extends High-Puff Competition Into Hookah-Style DTL Use
2Firsts has noted that Geek Bar has added BURJ to its official product portfolio under the E-HOOKAH category. Public information shows that BURJ 80K is a hookah-style disposable vape featuring a 25ml e-liquid capacity, a 1500mAh battery, 0.4Ω dual coils and three operating modes: ECO, Regular and Pulse. According to publicly available product information, the device is rated for up to 80,000 puffs in ECO mode and uses a nicotine strength of 0.5% (5mg/ml).
Market
May.29
U.S. Military Nicotine Policy Sparks Debate as Nicotine Pouches Enter Discussion
U.S. Military Nicotine Policy Sparks Debate as Nicotine Pouches Enter Discussion
An opinion article published by Stars and Stripes argued that the Pentagon’s January nicotine clinical guidelines overemphasize abstinence, fail to reflect the reality that about 30% of active-duty personnel use nicotine, and do not address nicotine pouches as potential harm-reduction products.
Industry Insight
Jun.08