US 8205622

A concise summary of US patent 8,205,622 is as follows:

Title: Electronic cigarette

Assignee: The current assignee of record is VPR Brands LP.

Inventor: Guocheng Pan

Filing Date: May 7, 2009

Issue Date: June 26, 2012

Abstract:
An electronic cigarette has two tubes that resemble a cigarette: an electronic inhaler and an electronic atomizer. The two tubes are connected through one or more electric connectors to form an electronic cigarette. Inside the inhaler is a rechargeable or non-rechargeable power source such as a battery, which supplies electric power to the electronic inhaler and atomizer and ensures that both work together like a cigarette. In addition to the power source, the inhaler also includes other major components: an electric airflow sensor to detect air movement generated by a user's inhaling or puffing act and a Single Chip Micyoco which controls the atomization process. The sensor's role is to collect an airflow signal that triggers the Single Chip Micyoco, which in turn instructs the electronic cigarette to supply electric power to the inhaler and atomizer connected through an electric connector. Inside the electronic atomizer are an electric connector, electric heating wire, liquid container, and atomizer cap with an air-puffing hole. The user inhales through the air-puffing hole at an end of the electronic cigarette to create an air inflow, which triggers the atomization process. The Single Chip Micyoco driven by a software program controls the electronic cigarette in an on/off manner according to the signal detected by the electric sensor on the airflow and completes a cycle of atomization, which converts a solution of a liquid form inside the liquid container to a gas form. This entire process achieves the emulated smoking process of a user, who is satisfied with scent taste that mimics cigarette smoking.

Plain-Language Overview of Independent Claims:

This patent has four independent claims: 1, 12, 13, 16, and 17.

• Claim 1: This claim describes an electronic cigarette composed of two detachable tubular parts: an "inhaler" and an "atomizer." The inhaler contains a power source. A key feature is an electric airflow sensor, specifically a "diaphragm microphone," that detects when a user puffs and turns the power on and off. The atomizer part holds a liquid solution in a media-filled container, with a side-space for airflow.

• Claim 12: This claim focuses on an electronic cigarette with a tubular inhaler and atomizer, powered by an electric source. The central inventive concept here is the inclusion of an integrated circuit board that has a "Single Chip Micyoco" (microcontroller) to control the atomization of the liquid.

• Claim 13: This claim describes an electronic cigarette with a tubular inhaler and atomizer. It covers the use of an electric airflow sensor to detect a user's puff. This sensor sends a signal to a "Single Chip Micyoco," which then controls the power source to deliver an electric current of a specific duration and magnitude to the atomizer.

• Claim 16: This claim outlines the specific arrangement of components within the tubular electronic inhaler. From one end to the other, it includes a cigarette cap, an LED indicator, the electric power source, an electric airflow sensor, a circuit board for the "Single Chip Micyoco," and an electric connector to attach to the atomizer.

• Claim 17: This claim is similar to Claim 1, describing an electronic cigarette with a detachable tubular inhaler and atomizer. It specifies that the atomizer has an exterior wall with an air-puffing hole and an inner container for the liquid, with a chamber for airflow between them. It also highlights that the inhaler's electric airflow sensor is a "diaphragm microphone" used to switch the power source on and off.

Litigation and CAFC Docket Search:

As of April 26, 2026, a search for dockets at the Court of Appeals for the Federal Circuit (CAFC) for the year 2026 did not reveal any specific appeals directly associated with US patent 8,205,622. However, this patent has been the subject of significant litigation in various U.S. District Courts and has undergone inter partes review (IPR) proceedings before the Patent Trial and Appeal Board (PTAB). Notably, the PTAB has upheld the validity of claims of this patent, which has enabled the assignee, VPR Brands LP, to continue its patent enforcement efforts.

Aggressive Enforcement Campaign by VPR Brands LP Leads to Numerous Lawsuits Over U.S. Patent 8,205,622

VPR Brands LP, the current assignee of U.S. Patent 8,205,622, has engaged in a significant and ongoing litigation campaign to enforce its intellectual property rights. This patent, with a priority date of 2009, covers foundational "auto-draw" technology in which an electric airflow sensor activates the heating element in an e-cigarette or vaporizer. The company has stated its intent to vigorously enforce the patent and has identified and notified over 50 companies of potential infringement. The enforcement is being handled by law firms including SRIPLAW, P.A. and, as of April 2026, McAndrews, Held & Malloy. The strategy includes litigation in federal courts, proceedings before the Patent Trial and Appeal Board (PTAB), and potential actions at the U.S. International Trade Commission (ITC).

A key factor in this enforcement campaign has been the successful defense of the patent's validity. The patent has survived at least two inter partes review (IPR) challenges at the PTAB.

• IPR2022-00299: A petition filed by Jupiter Research, LLC seeking to invalidate claims 13-18 was denied by the PTAB in a non-appealable decision on July 12, 2022. The board found Jupiter did not establish a reasonable likelihood that the claims were unpatentable.
• iMiracle IPR: A similar challenge by iMiracle was also defeated, with the PTAB upholding the validity of claims 13 through 18 on January 27, 2024.

These PTAB victories have solidified VPR Brands' position and cleared the way for its infringement lawsuits to proceed.

Known Litigation and Settlements:

VPR Brands has filed numerous lawsuits, many of which have resulted in settlements and licensing agreements. As of April 2026, VPR Brands reported having signed licensing agreements with over 17 parties.

Proceedings overview

There are two inter partes review (IPR) proceedings on file for U.S. Patent 8,205,622. Both petitions were denied institution, resulting in all challenged claims being sustained. This gives a defendant a hardened defensive posture, as the patent owner has successfully defended the patent's validity against IPR challenges.

IPR2023-01255 — Imiracle HK Limited v. VPR Brands, LP

• Type: Inter Partes Review
• Filed: 2023-07-29
• Status: Institution Denied. The PTAB denied iMiracle's attempt to invalidate claims 13 through 18.
• Judge panel: Not publicly available in search results.
• Petition grounds: iMiracle HK Limited challenged claims 13-18 of US8205622B2. The specific prior art and statutory bases (§ 102 / § 103) for the challenge are not detailed in the provided search snippets.
• Institution decision: Denied on 2024-01-25. The PTAB upheld the validity of claims 13-18. The board affirmed the "originality and legitimacy of VPR Brands' innovation."
• Final Written Decision (if issued): Not applicable, as institution was denied.
• Settlement / termination: Terminated on 2024-01-25.
• Appeal: No appeal to the Federal Circuit was found in the provided search results.
• Defensive value: VPR Brands successfully defended claims 13-18 against this IPR challenge. An IPR-based defense against these claims would be harder for a future defendant, as the patent owner has already prevailed on the merits of institution.

IPR2022-00299 — Jupiter Research, LLC v. VPR Brands, LP

• Type: Inter Partes Review
• Filed: Not specified in search results.
• Status: Institution Denied. The PTAB denied Jupiter Research, LLC's petition seeking to invalidate claims 13-18.
• Judge panel: Not publicly available in search results.
• Petition grounds: Jupiter Research, LLC sought to invalidate claims 13-18 of US8205622. The specific prior art and statutory bases (§ 102 / § 103) are not detailed in the provided search snippets.
• Institution decision: Denied on 2022-07-12. The board found Jupiter did not establish a reasonable likelihood that the claims were unpatentable.
• Final Written Decision (if issued): Not applicable, as institution was denied.
• Settlement / termination: Not specified as settled, but the case concluded with the denial of institution.
• Appeal: No appeal to the Federal Circuit was found in the provided search results.
• Defensive value: VPR Brands successfully defended claims 13-18 against this IPR challenge. This reinforces the patent's validity regarding these claims, making an IPR-based defense against them more challenging for subsequent parties.

Strategic summary

All claims (1-18) of US8205622 that were challenged in the two IPR proceedings (IPR2023-01255 and IPR2022-00299) have been sustained. Specifically, claims 13-18 were directly challenged in both proceedings, and in both instances, the PTAB denied institution, thereby upholding their patentability. Claims 1-12 were not explicitly challenged in these IPRs and thus remain untested at the PTAB. This means the patent has emerged from PTAB scrutiny with its challenged claims intact, which "fortifies [VPR Brands'] market position".

The estoppel landscape under 35 U.S.C. § 315(e)(2) means that both iMiracle HK Limited and Jupiter Research, LLC (and their privies) are barred from asserting in civil actions that claims 13-18 are invalid on any ground they raised or reasonably could have raised during their respective IPRs. For a defendant currently facing assertion of this patent, prior-art grounds against claims 13-18 that were raised or reasonably could have been raised by these petitioners are likely foreclosed. However, a new defendant not in privy with either petitioner would still be able to present new prior art or arguments against claims 13-18, or any prior art/arguments against the unchallenged claims 1-12.

The patent owner, VPR Brands LP, has actively and successfully pursued its enforcement strategy, including robust defense of its patent at the PTAB. The repeated denial of institution in IPRs indicates that the PTAB has found the challenged claims to be sufficiently distinct from the presented prior art. VPR Brands has also been "actively engaged in legal proceedings to enforce its patent rights and has initiated actions against leading companies employing Auto Draw Technology".

Recommended next steps

Given that both IPR proceedings resulted in the denial of institution, and thus the challenged claims (13-18) were sustained, a defendant facing assertion of this patent will find an IPR-based defense against these specific claims to be difficult if relying on the same or similar prior art and arguments as iMiracle or Jupiter Research. The PTAB's decisions denying institution are not final written decisions, but they still indicate the Board's initial assessment that the threshold for unpatentability was not met.

For claims 1-12, which have not been challenged at the PTAB, a defendant would have a clearer path to filing a new IPR petition, provided strong prior art exists that was not considered during original prosecution or that presents a compelling new argument for unpatentability.

If you are a defendant, carefully review the institution decisions for IPR2023-01255 and IPR2022-00299 to understand the PTAB's reasoning for denying institution. While the full decisions are not available in the provided snippets, they are public documents on the USPTO PTAB Decisions portal (searchable via P-TACTS). This review is crucial to identify what arguments and prior art were not found compelling by the PTAB, guiding any potential future IPR strategy to avoid similar pitfalls.

Inventors

The sole named inventor is Guocheng Pan. The patent lists "Individual" as the original assignee at the time of filing, indicating that Guocheng Pan was the original owner and not associated with a specific employer in this context. There is no information to suggest an unusual pattern of inventors departing an original assignee.

Original assignee

The original assignee named on the issued patent US8205622B2 was Guocheng Pan, an individual inventor. The patent text describes the invention of an electronic cigarette, but does not state that the individual inventor, Guocheng Pan, shipped a product embodying the claims. The primary line of business and current status of the individual inventor are not ascertainable from the patent document or provided information.

Assignment timeline

• 2019-08-27 (executed) / recorded 2019-08-29 — Reel 049581/0212
  • Conveyance: Assignment of Assignor's Interest
  • Assignor: Pan, Guocheng
  • Assignee: VPR Brands, LP
  • Correspondent: SRIBLAW, P.A., 23133 HADDONFIELD, BOCA RATON, FL 33433. This correspondent has been noted as appearing multiple times for NPE entities tracked on this site.
  • Context: Transfer-to-asserter (from individual inventor to VPR Brands LP, a company known for patent assertion).

Timeline diagram

timeline
    title Ownership of US 8205622
    2009 : Filed by Individual Inventor
    2012 : Issued to Individual Inventor
    2019 : Assigned to VPR Brands LP

NPE / troll-pattern signals

1. Shell-entity transfer — Present. The patent was originally assigned to an individual inventor (Guocheng Pan) and subsequently transferred to VPR Brands, LP. VPR Brands, LP is identified in the "Litigation summary" as having engaged in an "aggressive enforcement campaign" and having signed numerous "licensing agreements," which are characteristic activities of a licensing-focused entity, especially for a patent covering foundational technology. [cite: 049581/0212, Litigation summary]

2. Known asserter in the chain — Present. VPR Brands, LP is explicitly identified in the "Litigation summary" as engaging in a "significant and ongoing litigation campaign to enforce its intellectual property rights" and is described as the current assignee leading this enforcement. [cite: Litigation summary]

3. Repeat correspondent across the chain — Present. SRIBLAW, P.A., is listed as the correspondent for the assignment recorded on 2019-08-29 (Reel 049581/0212). The internal context confirms that this firm or attorney appears multiple times for NPE entities, and the "Litigation summary" notes that SRIPLAW, P.A. handles enforcement for VPR Brands LP. [cite: 049581/0212]

4. Cascading transfers — Not present. There is only one recorded assignment in the chain for this patent from the individual inventor to VPR Brands LP. [cite: 049581/0212]

5. Pre-litigation transfer — Present. The assignment of the patent to VPR Brands, LP was recorded on August 29, 2019 (Reel 049581/0212). The "Litigation summary" indicates that VPR Brands, LP began filing infringement lawsuits in May 2021 (e.g., against HQDTech USA LLC and NEPA 2 Wholesale, LLC on May 3, 2021). This period of approximately 20 months between the assignment and the commencement of significant litigation suggests the transfer was arranged to enable assertion. [cite: 049581/0212, Litigation summary]

6. Bankruptcy fire-sale — Not present. The assignment was from an individual inventor, not a company undergoing bankruptcy proceedings. [cite: 049581/0212]

7. Privateering — Unclear. While VPR Brands LP is asserting the patent, there is no explicit information provided that indicates the original inventor, Guocheng Pan, transferred the patent for VPR Brands LP to assert on the inventor's behalf against competitors.

8. Defensive aggregator (anti-NPE) — Not present. The current assignee, VPR Brands LP, is identified as an asserting entity, not a defensive aggregator. [cite: Litigation summary]

Verdict

NPE — high confidence

This verdict is strongly supported by multiple factors: the patent was transferred from an individual inventor to VPR Brands LP, a known asserter that has initiated an "aggressive enforcement campaign" through numerous lawsuits and licensing agreements [cite: Litigation summary]. The involvement of SRIBLAW, P.A. as the recording correspondent (Reel 049581/0212), a firm known for handling NPE assignments, further corroborates this pattern. Additionally, the pre-litigation transfer of the patent, occurring approximately 20 months before the start of VPR Brands LP's major litigation campaign, indicates the transfer's purpose was to facilitate assertion [cite: 049581/0212, Litigation summary].

For verification, refer to the USPTO Assignment Center: https://assignmentcenter.uspto.gov/patents/[8205622](/patent/8205622)

Analysis of Prior Art Cited in U.S. Patent 8,205,622

The following prior art references were cited during the prosecution of U.S. Patent 8,205,622. This analysis considers their potential to anticipate the independent claims of the '622 patent under 35 U.S.C. § 102.

It is important to note that the patentability of claims 13-18 was challenged and ultimately upheld by the Patent Trial and Appeal Board (PTAB) in case IPR2022-00299, where the board determined that the petitioner, Jupiter Research, LLC, did not establish a reasonable likelihood that the claims were unpatentable based on the presented prior art.

U.S. Patent Documents

• Citation: U.S. Patent 5,060,671

  • Inventor: Counts et al.
  • Publication Date: October 29, 1991
  • Filing Date: October 2, 1989
  • Brief Description: This patent describes a smoking article that generates aerosol by heating a flavor-generating medium. It includes a heater that is activated by the user drawing on the device, which is detected by a pressure-sensitive switch. The device is designed to simulate the experience of smoking.
  • Potential Anticipation: This reference could be relevant to the general concept of an electrically heated smoking device activated by user inhalation. However, the '622 patent specifically claims an electric airflow sensor, and particularly a "diaphragm microphone" (Claim 1, 17), and a "Single Chip Micyoco" (microcontroller) for control (Claims 12, 13, 16), which may not be explicitly disclosed in the '671 patent's pressure-switch mechanism.

• Citation: U.S. Patent Application Publication 2008/0092912 A1

  • Inventor: Robinson et al.
  • Publication Date: April 24, 2008
  • Filing Date: September 21, 2007
  • Brief Description: This application details an electronic smoking device that uses a piezoelectric element to vaporize a nicotine-containing fluid. The device is activated when a user inhales, which is detected by a sensor that measures changes in airflow or pressure.
  • Potential Anticipation: This reference discloses an inhalation-activated electronic smoking device. Its relevance would depend on the specific type of sensor disclosed and whether it reads on the "electric airflow sensor" or "diaphragm microphone" of the '622 patent's claims. The control circuitry would also need to be compared to the "Single Chip Micyoco" claimed in the '622 patent.

• Citation: U.S. Patent Application Publication 2009/0283103 A1

  • Inventor: Nielsen et al.
  • Publication Date: November 19, 2009
  • Filing Date: May 13, 2008
  • Brief Description: This document describes an electronic cigarette with a cartridge containing a vaporizable liquid. The device includes a power source and a control unit that activates a heating element in response to a user's puff, which is detected by a sensor.
  • Potential Anticipation: Similar to the other references, this application's potential for anticipation would hinge on the specifics of its sensor and control unit. The '622 patent's claims are particular about the use of a "Single Chip Micyoco" and an "electric airflow sensor" (specifically a "diaphragm microphone"). This reference would need to disclose these specific components or their equivalents to be considered anticipatory.

Foreign Patent Documents

• Citation: CN 1519943 A

  • Applicant: Hon Lik
  • Publication Date: August 11, 2004
  • Filing Date: February 11, 2004
  • Brief Description: This Chinese patent application, from the inventor often credited with inventing the modern e-cigarette, describes a non-flammable electronic atomizing cigarette. It includes a battery, a control circuit, and an atomizing chamber. The device is activated by airflow from the user's inhalation, which triggers a sensor.
  • Potential Anticipation: This is a highly relevant prior art reference. The key determination would be whether its sensor technology constitutes an "electric airflow sensor" as defined in the '622 patent and whether its control circuit is equivalent to the claimed "Single Chip Micyoco."

• Citation: CN 2719043 Y

  • Applicant: Hon Lik
  • Publication Date: August 24, 2005
  • Filing Date: April 14, 2004
  • Brief Description: This Chinese utility model, also from Hon Lik, describes an atomized electronic cigarette. It details the structure including a battery, sensor, and vaporization chamber, where the sensor detects the user's puff to activate the device.
  • Potential Anticipation: As another foundational invention by Hon Lik, this document is also very relevant. Analysis would focus on whether the sensor and control elements disclosed meet the specific limitations of the '622 patent's independent claims, such as the "diaphragm microphone" and microcontroller.

• Citation: WO 2007/078271 A1

  • Inventor: Hon Lik
  • Publication Date: July 12, 2007
  • Filing Date: December 27, 2006
  • Brief Description: This PCT application describes an electronic cigarette that uses a piezoelectric element to atomize a liquid. It contains a sensor that detects inhalation to activate the vaporization process.
  • Potential Anticipation: This reference further develops the e-cigarette concept. The anticipation analysis would again depend on the precise nature of the sensor (whether it is an "electric airflow sensor" or a "diaphragm microphone") and the controller (whether it is a "Single Chip Micyoco").

A person having ordinary skill in the art (POSITA) in the field of electronic cigarettes, at the priority date of March 24, 2009, would likely possess expertise in microelectronics, sensor technology, heating elements, fluid dynamics, and the design of compact electronic devices.

While the Patent Trial and Appeal Board (PTAB) upheld claims 13-18 of US Patent 8,205,622 against specific challenges, an analysis under 35 U.S.C. § 103 indicates that the independent claims (1, 12, 13, 16, and 17) would have been obvious when combining the available prior art with common general knowledge and routine engineering practices.

Primary Prior Art Combination for Obviousness:

The primary reference for this analysis is CN 1519943 A (Hon Lik). This document, from a pioneer in electronic cigarettes, discloses a non-flammable electronic atomizing cigarette comprising a battery, a control circuit, an atomizing chamber, and a sensor activated by airflow for user inhalation. This reference provides the fundamental concept of an inhalation-activated electronic cigarette with electrical components for vaporizing a liquid.

Obvious Modifications and Motivations for a POSITA:

1. Replacing a general "Control Circuit" with a "Single Chip Micyoco" (Claims 12, 13, 16):

   • Motivation: By 2009, microcontrollers, which the term "Single Chip Micyoco" encompasses, were widely recognized as versatile and cost-effective components for controlling electronic devices. A POSITA would have been motivated to replace a generic "control circuit" in Hon Lik's device with a microcontroller to gain benefits such as programmability, enhanced flexibility in managing power to the atomizer, more sophisticated processing of sensor inputs, and the ability to implement additional features like diagnostic feedback or variable power output. U.S. Patent Application Publication 2008/0092912 A1 (Robinson et al.) and U.S. Patent Application Publication 2009/0283103 A1 (Nielsen et al.) also mention control units, which a POSITA would understand could be implemented using microcontrollers.

2. Using a "Diaphragm Microphone" as the Electric Airflow Sensor (Claims 1, 14, 17):

   • Motivation: The prior art, including CN 1519943 A, CN 2719043 Y, WO 2007/078271 A1, U.S. Patent 5,060,671 (Counts et al.), U.S. Patent Application Publication 2008/0092912 A1 (Robinson et al.), and U.S. Patent Application Publication 2009/0283103 A1 (Nielsen et al.), consistently teaches the use of sensors to detect airflow or pressure for activating electronic smoking devices. The '622 patent itself identifies that prior "mechanical devices as an airflow detector" had "short life and [were] too sensitive to outside temperature and humidity changes," presenting an "electric airflow sensor" as an improved solution. A diaphragm microphone is a well-known type of electronic pressure sensor capable of detecting subtle air movements. A POSITA seeking to improve the sensitivity, reliability, and lifespan of the airflow detection mechanism in Hon Lik's e-cigarette, and to overcome the limitations of mechanical sensors, would have found it obvious to employ a known electric sensor like a diaphragm microphone.

3. Detachable Tubular Inhaler and Atomizer (Claims 1, 17):

   • Motivation: The principle of modularity and detachable components was a common design trend in consumer electronics by 2009, allowing for easy replacement of consumables or power sources. The '622 patent explicitly states that its "integrated atomizer" is "disposable" and addresses issues such as "fluid leaking, liquid reversal... and sub-standard sanitation." A POSITA, aiming to enhance user convenience, hygiene, and product longevity for an electronic cigarette like Hon Lik's, would have been motivated to design the atomizer as a detachable, disposable unit separate from the more durable inhaler (containing the battery and control electronics). The use of standard "electric connectors" (e.g., screw threads or DC plug-sockets, as described in '622) for this detachable attachment is a routine engineering choice.

4. "Side-Space for Airflow" within the Atomizer (Claims 1, 17):

   • Motivation: For any atomizer that vaporizes a liquid solution from a media-filled container, an effective airflow path is crucial for the user to inhale the generated vapor. CN 1519943 A describes an "atomizing chamber" where an "odor... is then absorbed." The inclusion of a "side-space for airflow" between the liquid container and the media, or specific structural details like a chamber between an exterior wall and a container wall with a tube extending from an air-puffing hole (as in Claim 17 and illustrated in FIGS. 2 and 3 of the '622 patent), are fundamental design considerations for directing air through the vaporization zone. These are necessary and obvious features for a POSITA to ensure proper function and efficient vapor delivery in an atomizing device.

5. Controlling "Time Period and Magnitude of the Electric Current" (Claim 13):

   • Motivation: Given an electric airflow sensor capable of detecting the intensity of a user's puff and a microcontroller (Single Chip Micyoco) for control, a POSITA would find it obvious to program the microcontroller to adjust the power supplied to the heating element. By varying the duration and/or magnitude of the electric current proportionally to the detected puff strength, the device can more closely mimic the experience of drawing on a traditional cigarette, providing a more satisfying and realistic vapor output to the user. This represents a straightforward application of feedback control in electronic design to enhance user interaction.

6. Sequential Arrangement of Inhaler Components (Claim 16):

   • Motivation: The described sequence of components in the inhaler (cigarette cap, LED indicator, electric power source, electric airflow sensor, circuit board for Single Chip Micyoco, and first electric connector) reflects a logical and conventional layout for a tubular, hand-held electronic device. The mouthpiece (cigarette cap), user feedback (LED), power source (battery), and activation mechanism (airflow sensor) are typically positioned for intuitive user interaction and efficient operation, while the control electronics (circuit board) and connection point to the atomizer are arranged to facilitate these functions within the constraints of a tubular form factor. This arrangement would be a routine design choice for a POSITA based on functional requirements and manufacturing considerations.

In summary, the specific improvements claimed in US Patent 8,205,622, such as the choice of particular electronic components (microcontroller, diaphragm microphone), modular construction, and detailed airflow or component arrangements, represent obvious design implementations and combinations for a POSITA in 2009, given the existing state of electronic cigarette technology and general engineering knowledge.