Mayborn Uk Ltd v. Comotomo Inc

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Mayborn (UK) Limited (England), Mayborn USA, Inc. (New York), and Mayborn Group Limited (England)
  • Defendant: Comotomo Inc. (California) and Comotomo Corporation (Korea)
  • Plaintiff's Counsel: Fish & Richardson P.C.
• Case Identification: 5:23-cv-00134, S.D.N.Y., 01/27/2022
• Venue Allegations: Plaintiff alleges venue is proper in the Southern District of New York because Defendant has committed acts of infringement in the district and maintains a regular and established place of business there, including an office in New York City.
• Core Dispute: Plaintiff alleges that Defendant's baby bottles infringe two U.S. patents related to the design of flexible, breast-like baby bottle nipples and their associated collars.
• Technical Context: The technology concerns baby feeding bottles engineered to more closely mimic the anatomical shape and dynamic movement of a human breast to facilitate an easier transition between breast and bottle feeding for infants.
• Key Procedural History: The asserted patents are continuations within a patent family claiming priority to 2004. Plaintiff alleges it provided Defendant with notice of infringement of the first-issued patent via retail partners and a specific claim chart approximately six months before filing suit. Plaintiff further alleges that Defendant had knowledge of the second-issued patent because it was actively tracking the patent's underlying application during its prosecution.

Case Timeline

Date	Event
2004-06-29	Earliest Priority Date for '930 and '244 Patents
2021-03-23	'930 Patent Issue Date
2021-07-22	Alleged Notice of '930 Patent Infringement to Defendant
2021-12-28	'244 Patent Issue Date
2022-01-27	Complaint Filing Date

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

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

The Invention Explained

• Problem Addressed: The patent's background describes shortcomings in prior art baby bottle teats, noting that they often fail to closely mimic the natural movement of a human breast during feeding ʼ930 Patent, col. 1:36-39 It states that existing designs can have "undefined and unpredictable" flex points or allow for only constrained stretching, creating a risk of flow blockage if the nipple collapses ʼ930 Patent, col. 1:40-46
• The Patented Solution: The invention discloses a nipple assembly designed for more natural feeding action by incorporating a dedicated "flex region" within the areola portion of the nipple ʼ930 Patent, abstract This region contains a plurality of grooves or "flex channels" on its inner surface, which allows the teat portion to move towards and away from the base in a controlled manner that emulates the stretching of a human breast ʼ930 Patent, col. 2:10-15 ʼ930 Patent, Fig. 1
• Technical Importance: The design aims to provide a more anatomically correct and functional feeding apparatus that improves an infant's ability to latch and makes the transition between breast and bottle feeding simpler Compl. ¶13

Key Claims at a Glance

• The complaint asserts independent claim 14 Compl. ¶28
• The essential elements of independent claim 14 include:
  • A vessel with an open top.
  • A collar with an internally threaded inner surface and an outermost surface having a sloping portion that comprises a majority of that surface.
  • A nipple featuring a teat portion with variable wall thickness, a domed base portion, an areola portion, a flange, and a one-way air inlet valve with specific length and position constraints.
  • A method of securing the nipple to the collar by capturing the collar's inner edge between the nipple's base and flange.
  • A method of securing the assembly to the vessel by capturing the nipple's flange between the collar and the vessel's open top.
• The complaint states that Defendant infringes "one or more claims" of the patent, reserving the right to assert additional claims Compl. ¶28

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

The Invention Explained

• Problem Addressed: As a continuation of the '930 patent, the '244 patent addresses the same technical challenge: designing a baby bottle that more effectively simulates the experience of breastfeeding to provide a "more natural feeding action" '244 Patent, col. 2:15
• The Patented Solution: This invention focuses on the overall geometry of the cover assembly, describing how the collar and the lower portion of the nipple combine to "define a downward domed shape" '244 Patent, claim 21 This shape extends from a "flex region" on the nipple outward and downward toward the widest edge of the collar, creating a continuous, breast-like profile that is both anatomically shaped and mechanically flexible '244 Patent, abstract '244 Patent, Fig. 4
• Technical Importance: By defining the specific geometric relationship between the nipple and collar, the invention seeks to create a seamless, wide-based structure that encourages a proper latch similar to that in natural breastfeeding Compl. ¶13

Key Claims at a Glance

• The complaint asserts independent claim 21 Compl. ¶44
• The essential elements of independent claim 21 include:
  • A container with a varying internal circumference and an opening.
  • A cover assembly, including a nipple and a collar.
  • The nipple comprises a mouthpiece, a "flex region" allowing the mouthpiece to flex, a "bite region," and a flange.
  • The collar is configured to removably couple to the nipple to seal the container.
  • A key limitation wherein the collar and the lower nipple portion together define a "downward domed shape" that extends from the flex region to the widest circumferential edge of the collar.
• The complaint reserves the right to assert claims beyond claim 21 Compl. ¶44

III. The Accused Instrumentality

Product Identification

• The "Accused Products" are identified as "Comotomo's Baby Bottle and substantially similar products and components thereof" Compl. ¶21

Functionality and Market Context

• The complaint alleges the Accused Products are marketed as having a "breast-like shape, design, and functionality" intended to "mimic breastfeeding to help babies easily transition back and forth" Compl. ¶21 Compl. ¶23
• Technical functionality is detailed through a series of annotated photographs. For instance, an image of the accused bottle's vessel is provided to show its "open top" and "varying internal circumference" Compl. ¶30 Compl. ¶46 Another image depicts the accused nipple, identifying features such as the "flex region," "bite region," and "flange" Compl. ¶48
• The complaint positions Mayborn's "Closer to Nature" bottle line as a market-revolutionizing product that became the "gold standard" for breast-like bottle designs, implying that Comotomo's similar design is a copy that infringes on its pioneering technology Compl. ¶¶12-14

IV. Analysis of Infringement Allegations

10,952,930 Patent Infringement Allegations

Claim Element (from Independent Claim 14)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a) a vessel having an open top	The accused feeding bottle includes a vessel component with an open top. An annotated image shows the vessel and its opening Compl. ¶30	¶30	col. 4:57-58
b) a collar having... an outermost surface having a sloping portion that extends outwardly and downwardly... and wherein said sloping portion comprises a majority of the collar's outermost surface	The accused collar has a sloping outermost surface that extends outwardly and downwardly and comprises the majority of that surface. This is illustrated in an annotated photograph of the collar (Compl. ¶31).	¶31	col. 4:60-63
c) a nipple having: a teat portion having a variable wall thickness... a base portion having a domed configuration... a one-way air inlet valve...	The accused nipple is alleged to have all recited sub-components, including a teat with variable wall thickness, a domed base, and a one-way air inlet valve with the claimed positional and length constraints. The complaint provides several annotated images to support these allegations (Compl. ¶32).	¶32	col. 4:59-63; col. 5:15-19
d) the nipple being secured to the collar by sealingly capturing an inner edge of the collar between the base portion and the flange	The accused nipple is shown secured to the collar by capturing an inner edge of the collar between the nipple's base and flange (Compl. ¶33).	¶33	col. 5:6-14
e) the nipple being secured to the vessel by capturing the flange of the nipple between the collar and the open top of the vessel	The accused nipple is shown secured to the vessel by capturing its flange between the collar and the vessel's opening (Compl. ¶34).	¶34	col. 5:6-14

• Identified Points of Contention:
  • Scope Questions: A potential point of dispute is whether the accused collar's "sloping portion" can be shown to comprise a "majority" of its outermost surface, a term of degree that may require factual determination.
  • Technical Questions: The claim requires a "one-way air inlet valve" with four specific structural and positional characteristics. The infringement analysis may turn on whether the accused product's venting feature, as depicted in an annotated image (Compl. ¶32), meets each of these distinct limitations (extending through the base, projecting downwardly, having a specific length, and being inwardly disposed).

11,207,244 Patent Infringement Allegations

Claim Element (from Independent Claim 21)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a container comprising a varying internal circumference and an opening into the container	The accused drinking vessel is alleged to be a container with an opening and a varying internal circumference, as shown in an annotated image Compl. ¶46	¶46	col. 4:57-58
a cover assembly comprising... a nipple comprising a mouthpiece... a flex region... a bite region, and a flange	The accused cover assembly is alleged to include a nipple with a mouthpiece, flex region, bite region, and flange. An annotated photograph of the nipple identifies these features Compl. ¶48	¶48	col. 3:3-6; col. 3:12-13
a collar configured to removably couple to the nipple to seal over the opening of the container	The accused assembly includes a collar designed to removably couple to the nipple and seal the container's opening Compl. ¶49	¶49	col. 4:55-56
wherein the collar and the 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 accused collar and nipple are alleged to jointly form a downward domed shape with the specific geometry recited in the claim. The complaint provides a visual representation of this alleged shape Compl. ¶50	¶50	col. 4:60-63

• Identified Points of Contention:
  • Scope Questions: The construction of the term "flex region" will be critical, as its location serves as the starting point for the claimed "downward domed shape." The parties may dispute the precise boundaries of this region on the accused product.
  • Technical Questions: A central issue will be the complex, relational geometry of the final limitation. The question for the court will be whether the combined profile of the accused collar and nipple creates a shape that "extends outwardly and downwardly from the flex region... towards a widest circumferential edge of the collar," which may depend on detailed measurements and expert testimony.

V. Key Claim Terms for Construction

• Term from '930 Patent, Claim 14: "one-way air inlet valve"

• Context and Importance: This term recites a specific functional component and is further defined by four distinct structural and positional sub-limitations. Infringement of claim 14 requires the accused product's vent to satisfy all parts of this definition, making its construction central to the dispute.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The patent specification discloses multiple valve structures, including a "lip valve" ʼ930 Patent, col. 5:16 and, alternatively, a "slit valve" ʼ930 Patent, col. 5:32 This could support an argument that the term is not limited to a single embodiment but covers different structures that perform the one-way valving function.
  • Evidence for a Narrower Interpretation: The detailed description and figures provide a specific embodiment of a "lip valve portion 123" that projects from the nipple flange ʼ930 Patent, col. 5:15-19 ʼ930 Patent, Fig. 6 A party could argue that the four sub-limitations in the claim, when read in light of this specific disclosure, require a structure highly similar to the one depicted.

• Term from '244 Patent, Claim 21: "flex region"

• Context and Importance: The location of the "flex region" is a critical reference point that defines the origin of the "downward domed shape" that characterizes the overall assembly. The construction of this term is therefore foundational to the infringement analysis of the patent's key geometric limitation.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The specification describes the flex region functionally as allowing the "teat portion and/or areola portion to move towards and away from one another" '244 Patent, col. 2:11-14 This could support a construction based on the function of providing flexibility, regardless of the specific structure that achieves it.
  • Evidence for a Narrower Interpretation: The detailed description of an embodiment states that the "areola portion 16 includes a flex region 20 comprising three grooves or flex channels 22 extending around an inner surface" '244 Patent, col. 2:64-66 This language could be used to argue that the term requires the presence of specific structural features like internal grooves.

VI. Other Allegations

• Indirect Infringement: The complaint alleges both induced and contributory infringement Compl. ¶22 Compl. ¶38 Compl. ¶54 The inducement allegations are based on Defendant's promotional activities and instruction manuals, which allegedly encourage customers to assemble and use the accused products in an infringing manner Compl. ¶¶23-24 The contributory infringement allegations are based on the sale of replacement nipples, which are alleged to be material components not suitable for substantial non-infringing use Compl. ¶38
• Willful Infringement: Willfulness is alleged for both patents Compl. ¶40 Compl. ¶56 For the '930 patent, the allegation is based on pre-suit knowledge stemming from notice allegedly received through retail partners on or about July 22, 2021, followed by a claim chart from the Plaintiff on July 23, 2021 Compl. ¶35 For the '244 patent, the allegation is based on knowledge since its issuance, and more pointedly, on the allegation that Defendant was "tracking the prosecution" of the underlying patent application before it issued Compl. ¶26 Compl. ¶51

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

• A core issue will be one of geometric scope: does the combined profile of the accused bottle's collar and nipple base form the specific "downward domed shape" that "extends... from the flex region... towards a widest circumferential edge of the collar" as required by claim 21 of the '244 patent, or does the accused product's geometry fall outside this precise definition?
• A central evidentiary question will be one of component functionality: does the accused bottle's air vent meet all four structural and positional limitations of the "one-way air inlet valve" recited in claim 14 of the '930 patent, or is there a fundamental mismatch in its technical configuration or operation?
• The determination of willfulness may hinge on the defendant's alleged pre-suit conduct, particularly the allegation that it actively tracked the prosecution of the application that issued as the '244 patent, which raises a significant question regarding the timing and extent of its knowledge of the patented technology.