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.

NAS 2026 | FDA CTP Director Says PMTA Pathway Is “Predicated on Tobacco Harm Reduction”
NAS 2026 | FDA CTP Director Says PMTA Pathway Is “Predicated on Tobacco Harm Reduction”
At the 2026 New Approaches Summit in New York, FDA Center for Tobacco Products Director Bret Koplow said the PMTA pathway is “predicated on tobacco harm reduction.” He outlined four CTP priorities: youth prevention, helping adults quit or switch to lower-risk products, improving relative-risk communication, and reducing unauthorized products. Koplow also addressed flavored e-cigarettes, public risk perceptions, industry credibility and efforts to make PMTA reviews more efficient and predictable.
Sep.26
Wall Street Journal: U.S. FDA Plans Faster Vape and Nicotine Pouch Reviews, Revisit of 2021 PMTA Rule
Wall Street Journal: U.S. FDA Plans Faster Vape and Nicotine Pouch Reviews, Revisit of 2021 PMTA Rule
The Trump administration is preparing changes intended to accelerate FDA market authorization reviews for e-cigarettes and nicotine pouches, according to The Wall Street Journal. The FDA is expected to revisit its 2021 PMTA rule and may simplify some scientific study requirements and shorten review times. The agency has not formally announced the changes. Over the past year, the FDA has already accelerated nicotine-pouch reviews, expanded ENDS authorizations and upgraded its CTP Portal NextGen application system. As of August 2026, 43 nicotine pouch products and 48 e-cigarette products had received FDA marketing authorization.
Sep.24
IVG Parent Secures HMRC Excise Warehouse and Duty Stamp Approvals Ahead of UK Vape Tax
IVG Parent Secures HMRC Excise Warehouse and Duty Stamp Approvals Ahead of UK Vape Tax
Acme Vape Ltd, the company behind UK vaping brand IVG, has received HM Revenue & Customs approval to operate an excise warehouse for vaping products and participate in the Vaping Duty Stamps Scheme. The UK's Vaping Products Duty will take effect on October 1, 2026, at a flat rate of £2.20 per 10ml of vaping liquid. Acme Vape Ltd says its approved warehouse in Preston will become operational under the new regime on the same date.
Regulations
Sep.18 by 2Firsts Perspectives
Product | JT Refreshes Ploom CUBE Design and Expands Japan Retail Distribution, Targeting Younger Men and Female Users
Product | JT Refreshes Ploom CUBE Design and Expands Japan Retail Distribution, Targeting Younger Men and Female Users
Japan Tobacco (JT) launched a refreshed Ploom CUBE design in Japan on September 8, 2026, with broader convenience-store and tobacco-retail distribution planned from October 13. The updated device retains the existing Rounded Cube form and heating platform while replacing four previous body colors with Pebble White and Cobalt Black. JT is also introducing new Front Panels and Fabric Back Covers, although the new accessories are not compatible with the previous Ploom CUBE design. The company says the update is intended to broaden appeal among younger male and female users.
Sep.09
Ireland’s Vape Tax Raises €22 Million in Nine Months as Government Considers 2027 Budget Changes
Ireland’s Vape Tax Raises €22 Million in Nine Months as Government Considers 2027 Budget Changes
According to Irish media outlets Highland Radio and BreakingNews.ie, the Irish government is considering whether to adjust vape tax policy in the 2027 Budget. The tax has generated about €22 million ($24 million) in revenue during its first nine months. While no increase has been confirmed, the revenue performance could influence future fiscal discussions. Any tax rise could increase product costs and potentially affect retail prices.
Aug.12
Philippines BIR Steps Up Illicit Vape Enforcement Ahead of Christmas Shopping
Philippines BIR Steps Up Illicit Vape Enforcement Ahead of Christmas Shopping
The Philippines’ Bureau of Internal Revenue is intensifying enforcement against illicit vape and tobacco products ahead of the Christmas shopping season, directing regional and enforcement offices to strengthen monitoring of production sites, warehouses, distribution channels and retail outlets. The BIR destroyed 240,550 illicit vape products in August with an estimated tax liability of about PHP1.53 billion. A nationwide tax-compliance operation in July also inspected 3,590 businesses involved in tobacco and vapor products.
Regulations
Sep.17 by 2Firsts Perspectives