Mayborn Uk Ltd v. Comotomo Inc

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Mayborn (UK) Limited, Mayborn USA, Inc., Mayborn Group Limited (United Kingdom; New York)
  • Defendant: Comotomo Inc., Comotomo Corporation (California; Korea)
  • Plaintiff's Counsel: Fish & Richardson P.C.
• Case Identification: 5:23-cv-00134, S.D.N.Y., 01/27/2022
• Venue Allegations: Venue is alleged to be proper in the Southern District of New York because Defendant Comotomo Inc. has a regular and established place of business in the district.
• Core Dispute: Plaintiff alleges that Defendant's baby bottles infringe two patents related to nipple designs that mimic the shape and flexibility of a human breast.
• Technical Context: The technology at issue addresses the design of baby bottle nipples to provide a more natural feeding experience, aiming to ease the transition for infants between breast and bottle feeding.
• Key Procedural History: The asserted patents are part of a family claiming priority to 2004. The complaint alleges that Defendant had pre-suit knowledge of its alleged infringement of the first patent-in-suit via notice from Amazon on July 22, 2021, and a claim chart provided by Plaintiff on July 23, 2021. For the second patent-in-suit, knowledge is alleged based on Defendant's purported tracking of the patent's application during its prosecution.

Case Timeline

II. Technology and Patent(s)-in-Suit Analysis

U.S. Patent No. 10,952,930 - "Baby Bottle With Flexible Nipple Regions"

• Patent Identification: U.S. Patent No. 10,952,930, "Baby Bottle With Flexible Nipple Regions," issued March 23, 2021.

The Invention Explained

• Problem Addressed: The patent's background section describes challenges with prior baby bottle nipples, noting that they often fail to "closely mimic the movement of the human breast during sucking" and that the point at which they flex can be "undefined and unpredictable" ʼ930 Patent, col. 1:36-41
• The Patented Solution: The invention proposes a nipple design that incorporates a dedicated "flex region" within the areola portion, typically created by a series of grooves or channels on the nipple's inner surface ʼ930 Patent, col. 2:64 - col. 3:6 This structure is intended to allow the teat portion to move back and forth in a controlled manner that more closely simulates the natural mechanics of breastfeeding ʼ930 Patent, col. 2:10-14
• Technical Importance: The design aims to provide a more natural feeding action, which may help infants transition more easily between breast and bottle feeding ʼ930 Patent, col. 4:5-10

Key Claims at a Glance

• The complaint asserts independent claim 14 Compl. ¶29
• Key elements of independent claim 14 include:
  • A vessel with an open top.
  • A collar with an internally threaded inner surface and a sloping outermost surface.
  • A nipple with a teat portion of variable wall thickness, a domed base portion, and an areola portion between them.
  • A one-way air inlet valve with specific structural and positional characteristics: (i) extending through the base, (ii) projecting downwardly, (iii) having a length not extending past the collar's lower rim, and (iv) disposed at least partially inwardly from the collar.
  • A flange for sealing with the vessel, which is captured between the collar and the vessel.
• The complaint does not explicitly reserve the right to assert other claims, but standard litigation practice allows for amendments.

U.S. Patent No. 11,207,244 - "Baby Bottle With Flexible Nipple Regions"

• Patent Identification: U.S. Patent No. 11,207,244, "Baby Bottle With Flexible Nipple Regions," issued December 28, 2021.

The Invention Explained

• Problem Addressed: The ʼ244 Patent shares a specification with the ʼ930 Patent and addresses the same technical problem of creating a more anatomically and functionally realistic baby bottle nipple ʼ244 Patent, col. 1:30-41
• The Patented Solution: The solution is similar, focusing on controlled flexibility. The claims of this patent, however, characterize the invention differently, focusing on a "cover assembly" where the collar and the lower nipple portion "together define a downward domed shape" ʼ244 Patent, abstract ʼ244 Patent, col. 4:60-65 It also claims a "flex region" configured to allow a "mouthpiece" to move, and specifies that the mouthpiece defines a "bite region" ʼ244 Patent, col. 4:10-24
• Technical Importance: Like its predecessor, the invention aims to improve the infant feeding experience by more closely mimicking natural breastfeeding ʼ244 Patent, col. 4:5-10

Key Claims at a Glance

• The complaint asserts independent claim 21 Compl. ¶45
• Key elements of independent claim 21 include:
  • A container with a varying internal circumference.
  • A cover assembly comprising a nipple and a collar.
  • The nipple includes a "mouthpiece," a "flex region," a "bite region," and a flange.
  • The collar and lower portion of the nipple "together define a downward domed shape that extends outwardly and downwardly from the flex region... towards a widest circumferential edge of the collar."
• The complaint does not explicitly reserve the right to assert other claims.

III. The Accused Instrumentality

Product Identification

• The accused products are "Comotomo's Baby Bottle and substantially similar products and components thereof" Compl. ¶21

Functionality and Market Context

• The complaint alleges the accused products have a "breast-like shape, design, and functionality" Compl. ¶21 Marketing materials are cited to show the products are promoted to "mimic breastfeeding" and feature a "wide mound and a naturally shaped nipple" to facilitate a "seamless switch from breast to bottle" Compl. ¶23 The complaint includes an image depicting the accused bottle, which shows a soft-looking, wide-body vessel, a wide-mound nipple, and a collar ring securing the nipple to the vessel Compl. p. 9

IV. Analysis of Infringement Allegations

10,952,930 Patent Infringement Allegations

11,207,244 Patent Infringement Allegations

Identified Points of Contention:

• Structural Limitations: The infringement analysis for the '930 patent may focus on whether the accused product's vent system meets all four specific structural and positional limitations required for the "one-way air inlet valve." The complaint asserts compliance, but this multi-part definition presents a potential area for dispute.
• Geometric and Functional Definitions: For the '244 patent, a key question may be whether the accused product's separate collar and nipple components, when assembled, satisfy the limitation that they "together define a downward domed shape" with the claimed geometry. Further, the scope of terms like "flex region" and "bite region" could be contested, raising questions about whether the accused product's structure performs the claimed functions.

V. Key Claim Terms for Construction

Term: "one-way air inlet valve" ('930 Patent, Claim 14)

• Context and Importance: This term is critical because infringement requires the accused product to meet not only the general function of a one-way valve but also four specific sub-limitations defining its structure and position relative to the nipple and collar. The viability of the infringement claim depends heavily on a construction that encompasses the accused product's specific vent design.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The specification suggests flexibility in the valve's implementation, stating that the base portion "may also include a one-way air-inlet valve of any appropriate type for example an integrally moulded duckbill valve" ʼ930 Patent, col. 2:60-62 This language may support a construction that is not limited to a single embodiment.
  • Evidence for a Narrower Interpretation: A defendant may argue that the term must be limited by the explicit structural requirements listed in the claim itself: (i) extending through the base, (ii) projecting downwardly, (iii) not extending past the collar's lower rim, and (iv) being disposed inwardly from the collar. This detailed definition could be interpreted as a deliberate limitation on the scope of the term.

Term: "flex region" ('244 Patent, Claim 21)

• Context and Importance: The "flex region" is central to the patent's purported innovation of mimicking natural feeding movements. Whether the accused nipple's flexible area falls within the construed scope of this term will be a pivotal issue.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The specification describes the functional result of the flex region, stating it provides "a bellows action as well as flexing in a direction perpendicular to the flow direction" ʼ244 Patent, col. 4:19-22 This functional description could support a broader construction that is not tied to a particular structure.
  • Evidence for a Narrower Interpretation: The detailed description repeatedly associates the "flex region" with specific structures, such as "three grooves or flex channels" and "undulating grooves" on the inner surface of the areola portion ʼ244 Patent, col. 2:64-66 ʼ244 Patent, col. 4:15-19 This may support a narrower construction that requires the presence of such grooved structures.

VI. Other Allegations

• Indirect Infringement: The complaint alleges induced infringement, stating that Defendant encourages infringement through advertising that promotes the "breast-like nature" of the accused products and by providing instruction manuals for assembly and use (Compl. ¶23; Compl. ¶24). Contributory infringement is also alleged based on the sale of replacement nipples, which are described as components not suitable for substantial noninfringing use Compl. ¶38 Compl. ¶54
• Willful Infringement: Willfulness is alleged for the ʼ930 patent based on pre-suit knowledge, including constructive notice from patent marking, actual notice from Amazon on July 22, 2021, and a claim chart provided by Plaintiff on July 23, 2021 Compl. ¶35 Compl. ¶40 For the ʼ244 patent, willfulness is alleged based on Defendant's purported knowledge of the patent since its issue date, allegedly because Defendant was tracking the prosecution of the underlying patent application Compl. ¶51 Compl. ¶56

VII. Analyst's Conclusion: Key Questions for the Case

• A core issue will be one of structural compliance: does the accused product's venting mechanism satisfy all four of the specific structural and positional requirements of the "one-way air inlet valve" as claimed in the '930 patent, or is there a material difference in its design or location?
• A key question of definitional scope will be central to the '244 patent analysis: can the term "flex region" be construed broadly to cover any flexible portion of the nipple, or is it limited by the specification's description of specific "undulating grooves," and do the accused product's separate components meet the "together define a downward domed shape" limitation?
• An evidentiary question will concern knowledge and intent: what evidence will support the allegation that Defendant tracked the prosecution of the application for the '244 patent, and how will that evidence affect the analysis of pre-suit knowledge and potential willfulness for that patent?