Piney Woods Mobility LLC v. Samsung Electronics Co Ltd

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Piney Woods Mobility LLC (Texas)
  • Defendant: Samsung Electronics Co., Ltd. (Republic of Korea); Samsung Electronics America, Inc. (New York)
  • Plaintiff's Counsel: Garteiser Honea, PLLC
• Case Identification: 2:26-cv-00122, E.D. Tex., 07/09/2026
• Venue Allegations: Venue is alleged to be proper as Defendant Samsung Electronics America, Inc. maintains a regular and established place of business in the district and has committed acts of infringement there. As Defendant Samsung Electronics Co., Ltd. is not a resident of the United States, it is alleged that it may be sued in any judicial district.
• Core Dispute: Plaintiff alleges that Defendant's SmartThings Find ecosystem and associated electronic devices infringe six patents related to two-way position information sharing technology.
• Technical Context: The technology enables mobile devices with location-tracking capabilities to mutually share position data with other devices through a central server, primarily for group coordination and safety applications.
• Key Procedural History: The complaint alleges that the patent family has been cited over 1,000 times by industry leaders, including by Defendant Samsung during the prosecution of its own patents. Plaintiff asserts this history placed Samsung on actual notice of the patents-in-suit as early as 2012, forming the basis for its willfulness allegations.

Case Timeline

Date	Event
2005-04-04	Priority Date for Patents-in-Suit
2012-01-01	Alleged actual notice of '441 Patent to Samsung
2012-09-01	Alleged actual notice of '581, '522, '616, '204, '618 Patents to Samsung
2014-04-29	U.S. Patent No. 8,712,441 Issued
2015-05-12	U.S. Patent No. 9,031,581 Issued
2015-11-10	U.S. Patent No. 9,185,522 Issued
2016-02-02	U.S. Patent No. 9,253,616 Issued
2017-01-01	Alleged actual notice of '616 Patent to Samsung
2017-04-04	U.S. Patent No. 9,615,204 Issued
2017-08-15	U.S. Patent No. 9,736,618 Issued
2026-07-09	First Amended Complaint Filed

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

U.S. Patent No. 8,712,441 - "Methods and Systems for Temporarily Sharing Position Data Between Mobile-Device Users"

• Patent Identification: U.S. Patent No. 8,712,441, "Methods and Systems for Temporarily Sharing Position Data Between Mobile-Device Users," issued April 29, 2014.

The Invention Explained

• Problem Addressed: The patent addresses the limitations of prior art one-way location sharing systems, where, for example, parents could track children but not vice-versa Compl. ¶19 Existing systems also lacked a mechanism to create temporary, on-the-fly ("instant buddy") location-sharing relationships for situations like rescues, and they could not be reconfigured in the field '441 Patent, col. 1:34-59
• The Patented Solution: The invention provides a system where software-enabled mobile devices (e.g., cell phones) with GPS communicate with a central "Buddy Watch Server" over the internet Compl. ¶20 '441 Patent, col. 2:25-38 This architecture facilitates mutual, two-way position tracking among members of pre-defined "Buddy Lists" and allows users to create temporary "instant buddies" for symmetrical, time-limited position sharing '441 Patent, abstract '441 Patent, Fig. 2A
• Technical Importance: The invention provided a software-based solution for two-way position sharing that utilized existing cellular platforms and infrastructure, making the technology accessible without requiring new hardware development Compl. ¶18

Key Claims at a Glance

• The complaint asserts independent claim 1 Compl. ¶31
• Essential elements of claim 1 include:
  • Receiving a request from a first device to set up a position-sharing relationship with a second device.
  • Transmitting an invitation to the second device to accept the relationship.
  • Receiving an acceptance message from the second device.
  • Establishing the relationship and facilitating the mutual exchange of initial and updated position data between the two devices.
  • Noting position data for multiple "buddies" of the first user, calculating a "center of gravity" for that data, and displaying a subset of the buddies based on that calculation.
• The complaint also asserts dependent claims 3-6, 9-17, 20-24, and 27-33 Compl. ¶31

U.S. Patent No. 9,031,581 - "Apparatus and Method for Obtaining Content on a Cellular Wireless Device Based on Proximity to Other Wireless Devices"

• Patent Identification: U.S. Patent No. 9,031,581, "Apparatus and Method for Obtaining Content on a Cellular Wireless Device Based on Proximity to Other Wireless Devices," issued May 12, 2015.

The Invention Explained

• Problem Addressed: The patent addresses a need for a system to deliver relevant content to a mobile device user based on their proximity to a group of other specified wireless devices '581 Patent, abstract
• The Patented Solution: The patent describes a server-based apparatus that receives authorization from a user to establish a relationship with a group of other devices identified by a "group code." The server then determines the user's proximity to devices in that group and, based on that proximity, selects and transmits location-dependent content to the user's device '581 Patent, abstract '581 Patent, col. 2:4-29 The system is designed to update this content as the user's proximity to the group changes '581 Patent, col. 2:30-41
• Technical Importance: This technology links location-sharing with content delivery, enabling applications where information is provided to a user based on their proximity to a defined group of other users.

Key Claims at a Glance

• The complaint asserts independent claim 7 Compl. ¶49
• Essential elements of claim 7 include:
  • An apparatus (server) with instructions to prompt a user for authorization to establish a relationship with other wireless devices associated with a "group code."
  • Determining the proximity of the user's device to the other devices in the group.
  • Transmitting information to a network destination to identify the user's location relative to the geolocations of the other devices.
  • Receiving location-dependent content from the network destination.
  • Presenting the content, including a map, to the user.
  • Detecting a change in proximity and repeating the process to receive updated, geospatially-dependent information.
• The complaint also asserts dependent claims 12, 21, and 22 Compl. ¶49

U.S. Patent No. 9,185,522 - "Apparatus and Method to Transmit Content to a Cellular Wireless Device Based on Proximity to Other Wireless Devices"

• Patent Identification: U.S. Patent No. 9,185,522, "Apparatus and Method to Transmit Content to a Cellular Wireless Device Based on Proximity to Other Wireless Devices," issued November 10, 2015.
• Technology Synopsis: This patent describes a server-based apparatus for delivering content to a mobile user. The system prompts a user for authorization to communicate with a group of other devices, determines the user's proximity to that group, and transmits location-dependent content to the user's device '522 Patent, abstract
• Asserted Claims: The complaint asserts independent claim 1 Compl. ¶67
• Accused Features: The complaint alleges Samsung's SmartThings ecosystem, which facilitates location-based interactions and content sharing, infringes this patent Compl. ¶¶66-69

U.S. Patent No. 9,253,616 - "Apparatus and Method for Obtaining Content on a Cellular Wireless Device Based on Proximity"

• Patent Identification: U.S. Patent No. 9,253,616, "Apparatus and Method for Obtaining Content on a Cellular Wireless Device Based on Proximity," issued February 2, 2016.
• Technology Synopsis: This patent claims a server apparatus that establishes a position-sharing relationship between devices. It involves receiving a request, transmitting an invitation, receiving an acceptance, and then facilitating the exchange of position data and providing map content based on the shared locations '616 Patent, abstract
• Asserted Claims: The complaint asserts independent claim 1 Compl. ¶85
• Accused Features: Samsung's SmartThings Find system, which allows users to share their location with others and view locations on a map, is accused of infringement Compl. ¶¶84-87

U.S. Patent No. 9,615,204 - "Techniques for Communication Within Closed Groups of Mobile Devices"

• Patent Identification: U.S. Patent No. 9,615,204, "Techniques for Communication Within Closed Groups of Mobile Devices," issued April 4, 2017.
• Technology Synopsis: This patent focuses on a server that manages communication within a "closed group" of mobile devices. The server receives authorization from a user, determines the user's proximity to the group, and transmits location-dependent content to the user's device, including map data '204 Patent, abstract
• Asserted Claims: The complaint asserts independent claim 1 Compl. ¶104
• Accused Features: The complaint targets the group-based location sharing and communication features within the Samsung SmartThings ecosystem Compl. ¶¶103-106

U.S. Patent No. 9,736,618 - "Techniques for Sharing Relative Position Between Mobile Devices"

• Patent Identification: U.S. Patent No. 9,736,618, "Techniques for Sharing Relative Position Between Mobile Devices," issued August 15, 2017.
• Technology Synopsis: This patent describes a method for sharing position data between mobile devices, managed by a server. It includes establishing a relationship via request and acceptance, followed by the mutual exchange of initial and updated position data, and displaying the shared locations on a map '618 Patent, abstract
• Asserted Claims: The complaint asserts independent claims 1, 10, and 18 Compl. ¶122
• Accused Features: The location sharing and mapping functionalities of the Samsung SmartThings Find application are accused of infringing this patent Compl. ¶¶121-124

III. The Accused Instrumentality

Product Identification

• The "Accused Products" are identified as the "SmartThings ecosystem," which includes the SmartThings Find application and a range of Samsung hardware such as Galaxy Smartphones (S, Note, Z, A, M, and F series), Galaxy Tablets, Galaxy Smartwatches, Galaxy Earbuds, and Galaxy SmartTag models Compl. ¶¶26-27

Functionality and Market Context

• The complaint alleges the Accused Products constitute a system with backend components (networks, servers, cloud infrastructure) that enables location determination, data transmission to Samsung servers, server-side processing, authorization controls, map displays, and alert generation (Compl. ¶26). The complaint includes a screenshot from Samsung's promotional website describing the ability to "Share your location with others," which it alleges is a two-way position information sharing feature Compl. Fig. 3 A screenshot of the SmartThings Find login page illustrates the branding of the accused ecosystem Compl. Fig. 2 The wide array of popular consumer electronics listed as Accused Products suggests a significant market presence (Compl. ¶¶11-12).

IV. Analysis of Infringement Allegations

'441 Patent Infringement Allegations

Claim Element (from Independent Claim 1)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
a method of sharing position data between a first device associated with a first user and a second device associated with a second user...	Samsung's SmartThings Find system allegedly enables sharing of position data between users' devices Compl. ¶¶26-27 Compl. Fig. 3	¶26	col. 1:10-15
receiving, from the first device, a first request to set up a position-sharing relationship between the first and second users;	A user allegedly initiates a location-sharing session from a Samsung device, which sends a request to Samsung's servers (Compl. ¶26).	¶26	col. 9:15-23
transmitting a second request to the second device, the second request inviting the second user to accept the position-sharing relationship;	Samsung's servers allegedly transmit an invitation to the second user's device to accept the location-sharing relationship (Compl. ¶26, Compl. ¶41).	¶26	col. 9:24-34
receiving a message from the second device indicating acceptance of the position-sharing relationship;	Samsung's servers allegedly receive a message from the second user's device indicating acceptance of the sharing invitation (Compl. ¶26).	¶26	col. 9:35-42
establishing the position-sharing relationship responsive to the acceptance;	Upon acceptance, Samsung's system allegedly establishes the sharing relationship, enabling the features that follow (Compl. ¶¶26, 28).	¶26	col. 8:5-10
transmitting the first position data to the second device and the second position data to the first device...	The system then allegedly enables the mutual, two-way exchange of location data between the participating devices (Compl. ¶19, Compl. ¶26; Compl. Fig. 3).	¶19	col. 1:34-39
wherein the second user is one of multiple buddies of the first user...calculating a center of gravity for the position data; and displaying the position data for a subset of the buddies based on the center of gravity.	The complaint makes a general allegation that the Accused Products meet "each and every limitation" of the asserted claims (Compl. ¶28). The complaint does not provide sufficient detail for analysis of the "center of gravity" calculation.	¶28	col. 10:52-59

'581 Patent Infringement Allegations

Claim Element (from Independent Claim 7)	Alleged Infringing Functionality	Complaint Citation	Patent Citation
An apparatus comprising instructions stored on non-transitory machine readable media...to cause at least one processor of a server to: prompt a user of the cellular wireless device...for authorization to establish a relationship with one or more other wireless devices associated with a group code...	Samsung's servers, running the SmartThings Find service, allegedly prompt users to "invite people" to share location data, which constitutes authorization to form a group Compl. ¶41 Compl. Fig. 3	¶41	col. 2:4-9
responsive to authorization provided by the user, determine...proximity of the cellular wireless device to at least one of the corresponding geolocations...	Samsung's servers allegedly determine the location of user devices relative to each other within the authorized group (Compl. ¶26).	¶26	col. 2:10-15
transmit information to a network destination via a cellular wireless connection, the information to facilitate identification by the network destination of location of the cellular wireless device...	Samsung's servers and devices allegedly transmit location data over cellular and internet networks for processing and sharing (Compl. ¶26; Compl. Fig. 1).	¶26	col. 2:16-21
receive responsive to identification of the location by the network destination content dependent on the location;	The system allegedly receives back content, such as map data showing the location of other devices in the group (Compl. ¶26).	¶26	col. 2:22-25
wherein the instructions when executed are further to cause the at least one processor to detect a change in the proximity...and dependent on the change in proximity, repeat the transmission of information...	The system allegedly updates location information as devices move, triggering new transmissions to the network (Compl. ¶26).	¶26	col. 2:30-36
and to receive geospatially-dependent information from the network destination responsive to the updated position.	The system allegedly receives updated map data or other content reflecting the new positions of the devices (Compl. ¶26).	¶26	col. 2:37-41

Identified Points of Contention

• Scope Questions: The patents describe a "Buddy Watch" system in the context of group coordination, parental monitoring, and assisting stranded motorists Compl. ¶19 Compl. ¶20 A potential point of contention is whether Samsung's "SmartThings Find" feature, primarily marketed for finding lost personal devices, falls within the scope of the claimed invention, which is framed as a person-to-person tracking and safety system.
• Technical Questions: Claim 1 of the '441 Patent recites a specific step of "calculating a center of gravity for the position data" and "displaying the position data for a subset of the buddies based on the center of gravity." The complaint makes only a conclusory allegation that all limitations are met (Compl. ¶28). This raises the evidentiary question of whether the Accused Products actually perform this specific calculation and display function as required by the claim.

V. Key Claim Terms for Construction

• The Term: "Buddy Watch server"

  • Context and Importance: This term appears throughout the patents-in-suit and is central to the infringement theory, as Plaintiff alleges Samsung's server infrastructure performs the role of the "Buddy Watch server" (Compl. ¶20; Compl. ¶21). The construction of this term will be critical to determining whether Samsung's backend systems, which support a variety of services, are equivalent to the claimed server.
  • Intrinsic Evidence for a Broader Interpretation: The specification of the '441 Patent states that the server is "not limited to any specific language or technology" ('441 Patent, col. 2:32-33). It is also referred to as a "Buddy Watch" or "Rubicon" server, which may suggest the name is not limiting and the term should be defined functionally by its role in the system Compl. Fig. 1
  • Intrinsic Evidence for a Narrower Interpretation: The patents consistently use the term in the context of managing "Buddy Lists," "Instant Buddies," and coordinating location sharing for safety and group activities Compl. ¶19 Compl. ¶20 A party could argue that the term is tied to this specific purpose and does not cover a general-purpose server infrastructure for finding lost items. The repeated use of the trademarked phrase "Buddy Watch™ server" could also be argued to imply a specific, branded system '441 Patent, col. 2:32

• The Term: "position-sharing relationship"

  • Context and Importance: The core of the alleged infringement is the establishment and maintenance of such a relationship between devices. The definition of this term-particularly its requirements for mutuality, temporariness, or purpose-will be key to the infringement analysis.
  • Intrinsic Evidence for a Broader Interpretation: The '441 Patent describes both permanent "Buddy Lists" and temporary "Instant Buddies," which may support a construction that the "relationship" can be either permanent or temporary, formal or ad-hoc '441 Patent, col. 2:39-3:30
  • Intrinsic Evidence for a Narrower Interpretation: The abstract and background of the '441 Patent heavily emphasize the novelty of creating a temporary, symmetrical sharing relationship for specific use cases like rescues '441 Patent, abstract '441 Patent, col. 1:45-53 Practitioners may focus on this language to argue that the term requires a mutual, two-way exchange of data, rather than any form of one-way location reporting.

VI. Other Allegations

• Indirect Infringement: Plaintiff alleges that Samsung induces infringement by providing instructions to its customers and end users on how to use the Accused Products to "share your location with others" Compl. ¶41 Compl. ¶59 Compl. ¶77 Compl. ¶96 Compl. ¶114 Compl. ¶132 This is supported by allegations that Samsung's websites and application interfaces explicitly teach this functionality Compl. Fig. 3
• Willful Infringement: The complaint alleges willful infringement based on pre-suit knowledge. It claims Samsung has been on actual notice of the patents since at least 2012, asserting that the patents-in-suit were disclosed during the prosecution of Samsung's own patent applications Compl. ¶35 Compl. ¶53 Compl. ¶71 Compl. ¶89 Compl. ¶90 Compl. ¶108 Compl. ¶126 As an alternative theory, Plaintiff alleges Samsung has a "policy or practice against investigating third party patent rights," constituting willful blindness Compl. ¶36 Compl. ¶54 Compl. ¶72 Compl. ¶91 Compl. ¶109 Compl. ¶127

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

• A central issue will be one of functional scope: does Samsung's "SmartThings Find" ecosystem, which is primarily marketed and used for finding lost items, perform the specific functions of the claimed "Buddy Watch" system, described in the patents as a tool for coordinating groups of people and facilitating rescues? The case may turn on whether the technical operation is equivalent, regardless of the differing market context.
• The determination of willful infringement will likely depend on the court's view of pre-suit notice. A key question is whether the citation of the patents-in-suit during the prosecution of Samsung's own patents is sufficient to establish the knowledge and intent required for willfulness, or if it will be considered a routine part of patent prosecution without particular legal significance for this case.
• An evidentiary question of proof will be critical: can the Plaintiff provide sufficient evidence that the Accused Products practice highly specific claim limitations, such as the "center of gravity" calculation in claim 1 of the '441 Patent, for which the complaint currently offers only conclusory allegations?