US 8781610

A concise summary of US Patent 8,781,610 is provided below:

US Patent 8,781,610: Method of ball game motion recognition, apparatus for the same, and motion assisting device

• Title: Method of ball game motion recognition, apparatus for the same, and motion assisting device
• Assignee: Zepp North America Inc. (Current), Hong Kong Zepp Holding Ltd (Current), Zepp Labs Inc (Original)
• Inventors: Zheng Han
• Filing Date: October 7, 2011
• Issue Date: July 15, 2014
• Abstract: The invention provides a method of ball game motion recognition, an apparatus for the same, and a motion assisting device. The method comprises: obtaining motion parameters corresponding to each sampling time for a motion; extracting feature points according to predetermined feature point recognition tactics utilizing the motion parameters obtained, in which the feature point recognition tactics comprise recognition tactics of at least three types of the feature points, comprising: power-assisting path early stage corresponding feature point, motion top point corresponding feature point, and ball hitting time corresponding feature point; and recognizing the motion as a predetermined ball game type if the feature points extracted satisfy feature point requirements of the predetermined ball game type.

Plain-Language Overview of Independent Claims:

• Independent Claim 1 (Method Claim): This claim describes a method for recognizing a ball game motion. It involves:

  1. Obtaining motion parameters: Gathering data (like acceleration, velocity, position, and stance) for a motion at various points in time.
  2. Extracting feature points: Identifying specific key points within the motion using predefined rules. These rules must include tactics for at least three types of feature points:
     • The start of the power-assisting path (e.g., the beginning of a backswing).
     • The top point of the motion (e.g., the peak of a swing).
     • The ball hitting time (e.g., the moment of impact).
  3. Recognizing the motion: Determining if the extracted feature points meet the requirements for a specific type of ball game (e.g., golf swing, soccer kick), thereby classifying the motion.

• Independent Claim 10 (Apparatus Claim): This claim describes an apparatus designed to perform the ball game motion recognition method. The apparatus includes:

  1. A parameter obtaining unit: A component configured to get motion parameters for a motion at different sampling times.
  2. A feature point extracting unit: A component that extracts feature points based on predetermined recognition tactics, which must include tactics for the same three types of feature points as in Claim 1 (power-assisting path early stage, motion top point, and ball hitting time).
  3. A motion recognizing unit: A component that recognizes the motion as a predetermined ball game type if the extracted feature points satisfy the specific requirements for that game type.

• Independent Claim 19 (Motion Assisting Device Claim): This claim describes a motion assisting device that integrates the recognition functionality. The device comprises:

  1. A sensor device: This device samples motion data (including acceleration) of an object at various times.
  2. A motion parameter confirming device: This device takes the motion data from the sensor, calculates the full motion parameters (acceleration, velocity, position, and stance) for the object at each sampling time, and then sends these parameters to the ball game motion recognition apparatus.
  3. The apparatus for ball game motion recognition: This is the apparatus described in Claim 10, which then uses the motion parameters to recognize the type of ball game motion.

Uncertainty Note:
The search for CAFC 2026 dockets for patent number 8781610 did not yield specific litigation results directly mentioning this patent number. The results provided general information about CAFC intellectual property cases and patent case summaries for various other patents in 2026. Therefore, I cannot definitively confirm if US8781610 is currently involved in any active litigation in the CAFC for 2026 based on the provided search results.

US Patent 8781610 has been involved in litigation.

Known Litigation Involving US Patent 8781610:

1. Jurisdiction: Texas Eastern District Court [cite: The full patent text, under "Legal status"]
   • Case Number: Not specified in the provided text.
   • Filing Date: Not specified in the provided text.
   • Plaintiff(s): Not specified in the provided text.
   • Defendant(s): Not specified in the provided text.
   • Outcome/Current Status: The Google Patents entry indicates "Family has litigation" and "US case filed in Texas Eastern District Court" [cite: The full patent text, under "Legal status"]. This suggests ongoing or past litigation within this jurisdiction, but further details like specific parties, case numbers, or outcomes are not provided directly by Google Patents. Darts-IP also indicates it provides access to the full litigation history of this patent family, including validity challenges, court documents, and case summaries. However, specific case details are behind a subscription wall.

Based on the available information, the details for the specific litigation are limited without access to a full Darts-IP or PACER subscription. The Google Patents entry confirms that a US case was filed in the Texas Eastern District Court, but does not provide specific case details like plaintiff, defendant, case number, or outcome. [cite: The full patent text, under "Legal status"]US patent 8781610 has been involved in litigation.

Known Litigation Involving US Patent 8781610:

1. Jurisdiction: Texas Eastern District Court [cite: The full patent text, under "Legal status"]
   • Plaintiff(s): Not specified in the provided text.
   • Defendant(s): Not specified in the provided text.
   • Case Number: Not specified in the provided text.
   • Filing Date: Not specified in the provided text.
   • Outcome/Current Status: The Google Patents entry for US8781610 indicates "Family has litigation" and specifically mentions a "US case filed in Texas Eastern District Court." [cite: The full patent text, under "Legal status"] However, the specific details regarding the plaintiff(s), defendant(s), case number, filing date, or the outcome/current status of this case are not publicly available in the provided text or readily accessible through the general search results without specialized database access (e.g., Darts-IP, PACER).

Proceedings overview

The USPTO ODP API reports no AIA trial proceedings for US patent 8781610. A web search conducted on today's date also did not surface any Inter Partes Review (IPR), Post-Grant Review (PGR), or Covered Business Method (CBM) proceedings related to US8781610.

Strategic summary

Based on the available information, US patent 8781610 has no history of AIA trial proceedings at the USPTO's Patent Trial and Appeal Board. All claims of the patent remain untested by IPR, PGR, or CBM challenges. This means there is no estoppel landscape established by the PTAB for this patent, and all prior art grounds remain available for a potential petitioner.

Recommended next steps

Since no PTAB activity exists for US8781610, a defendant facing assertion of this patent would have the full range of prior art and statutory bases available to them if they chose to file an IPR, PGR, or CBM petition. The absence of PTAB challenges for an active patent can sometimes indicate it has not been heavily asserted or that previous challenges were resolved without public PTAB proceedings.

Inventors

• Zheng Han (Zepp Labs Inc) [cite: The full patent text, under "Inventor", "Original Assignee"]

Original assignee

Zepp Labs Inc. The patent describes a "method of ball game motion recognition, apparatus for the same, and motion assisting device" [cite: The full patent text, under "Title"]. Zepp Labs Inc. developed and shipped products embodying these claims, specifically motion sensors for sports like golf and baseball that connect to mobile apps for swing analysis. Zepp Labs Inc. was acquired by Huami Corp. (now Zepp Health Corporation) in 2018.

Assignment timeline

• 2013-12-20 (executed) / recorded 2013-12-20 — Reel 031498/0746

  • Conveyance: Assignment
  • Assignor: Han, Zheng
  • Assignee: Zepp Labs, Inc.
  • Correspondent: BLANK ROME LLP. This correspondent has not recurred in this chain.
  • Context: Transfer from inventor to original assignee.

• 2018-08-30 (executed) / recorded 2018-08-30 — Reel 046487/0056

  • Conveyance: Assignment
  • Assignor: ZEPP LABS, INC.
  • Assignee: HUAMI HK LIMITED
  • Correspondent: AMERICAN PATENT AGENCY, LLC. This correspondent has not recurred in this chain.
  • Context: Acquisition

• 2018-10-16 (executed) / recorded 2018-10-16 — Reel 046598/0025

  • Conveyance: Assignment
  • Assignor: HUAMI HK LIMITED
  • Assignee: Beijing Shunyuan Kaihua Technology Limited
  • Correspondent: AMERICAN PATENT AGENCY, LLC. This correspondent appeared previously in this chain.
  • Context: Internal reorg

• 2026-04-10 (executed) / recorded 2026-04-10 — Reel 060593/0890

  • Conveyance: Assignment
  • Assignor: Beijing Shunyuan Kaihua Technology Limited
  • Assignee: ZEPP NORTH AMERICA, INC.
  • Correspondent: AMERICAN PATENT AGENCY, LLC. This correspondent appeared previously in this chain.
  • Context: Internal reorg

Timeline diagram

timeline
    title Ownership of US 8781610
    2011 : Application filed by Zepp Labs Inc
    2013 : Assigned to Zepp Labs Inc
    2014 : Application granted
    2018 : Assigned to Huami HK Limited
         : Assigned to Beijing Shunyuan Kaihua
    2026 : Assigned to Zepp North America Inc

NPE / troll-pattern signals

1. Shell-entity transfer — not present. While there are transfers between different corporate entities, these appear to be within a larger corporate structure (Zepp/Huami) rather than to a licensing-only shell entity with no apparent products.
2. Known asserter in the chain — not present. None of the assignees (Zepp Labs, Huami HK Limited, Beijing Shunyuan Kaihua Technology Limited, Zepp North America, Inc.) are publicly listed as known NPEs.
3. Repeat correspondent across the chain — present. AMERICAN PATENT AGENCY, LLC is listed as the correspondent for the assignments recorded on 2018-08-30 (Reel 046487/0056), 2018-10-16 (Reel 046598/0025), and 2026-04-10 (Reel 060593/0890).
4. Cascading transfers — present. Two assignments occurred within two months in 2018: 2018-08-30 (executed) to Huami HK Limited and 2018-10-16 (executed) to Beijing Shunyuan Kaihua Technology Limited. These entities also share the same correspondent. [cite: The full patent text, under "Legal status"]
5. Pre-litigation transfer — unclear. The Google Patents entry indicates litigation was filed in the Texas Eastern District Court, but no specific filing date for the first suit is provided to compare against assignment dates.
6. Bankruptcy fire-sale — not present. There is no indication in the provided text or assignment records of any bankruptcy proceedings involving Zepp Labs Inc. or subsequent assignees.
7. Privateering — not present. There is no evidence in the provided text to suggest privateering.
8. Defensive aggregator (anti-NPE) — not present. The chain does not terminate at a known defensive aggregator.

Verdict

Insufficient data. While there is a signal of "cascading transfers" and a "repeat correspondent" across several assignments (Reel 046487/0056, Reel 046598/0025, and Reel 060593/0890), there is not enough information to confidently classify this as an NPE. The assignees appear to be related corporate entities (Zepp/Huami ecosystem), suggesting internal reorganizations or acquisitions rather than transfers to shell entities for assertion. The lack of specific litigation details also makes a "pre-litigation transfer" determination impossible.

USPTO Assignment Center search page: https://assignmentcenter.uspto.gov/

To identify the most relevant prior art for US patent 8781610, I will examine the patent's cited references. For each reference, I'll provide a full citation, publication/filing date, brief description, and discuss which claim(s) it potentially anticipates under 35 U.S.C. § 102. Anticipation under 35 U.S.C. § 102 requires that every element of a claimed invention is disclosed, either expressly or inherently, in a single prior art reference.

I will access the USPTO database to ensure accuracy and retrieve the full list of cited prior art for US8781610.

Prior Art References for US Patent 8781610

The following prior art documents are cited in US Patent 8781610:

1. US Patent Publication No. US2008/0119269A1

   • Full Citation: US2008/0119269A1 titled "GAME SYSTEM AND STORAGE MEDIUM STORING GAME PROGRAM."
   • Publication/Filing Date: The provided patent text for US878160 refers to its publication, but does not explicitly state the filing date. A quick search of the patent publication itself (US2008/0119269A1) would be needed to find the filing date.
   • Brief Description: This reference describes a game system and storage medium that utilize a MEMS sensor device, including a tri-axial accelerometer, and infrared generators to calculate position on a two-dimensional surface based on signal intensity and relative distance. [cite: The full patent text, under "Description" -> "The first approach"]
   • Potentially Anticipating Claims (35 U.S.C. § 102): This reference describes a method of obtaining motion parameters using a tri-axial accelerometer, which is a core component in the "motion parameters" as described in US8781610 (e.g., in claims related to obtaining acceleration data). The concept of sampling acceleration and determining position is present. Therefore, it could potentially anticipate claims related to:
     • Claim 1 (Preamble and element (A)): "A method of ball game motion recognition, comprising: (A) obtaining motion parameters corresponding to each sampling time for a motion, wherein the motion parameters comprise acceleration and position." The reference explicitly discusses sampling acceleration and calculating position. [cite: The full patent text, under "Description" -> "The first approach"]
     • Claims related to the sensor device: Claims describing the use of a tri-axial accelerometer for sampling acceleration. For instance, dependent claims that specify the sensor device's components.

2. US Patent Publication No. US2008/0049102A1

   • Full Citation: US2008/0049102A1 titled "MOTION DETECTION SYSTEM AND METHOD."
   • Publication/Filing Date: The provided patent text for US878160 refers to its publication, but does not explicitly state the filing date. A quick search of the patent publication itself (US2008/0049102A1) would be needed to find the filing date.
   • Brief Description: This reference discloses a motion detection system and method that uses a MEMS sensor device formed by an accelerometer and a gyroscope, or by two accelerometers, to obtain full six-dimensional motion parameters (three-dimensional motion and three-dimensional rotation). [cite: The full patent text, under "Description" -> "The second approach"]
   • Potentially Anticipating Claims (35 U.S.C. § 102): This reference directly addresses obtaining comprehensive motion parameters, including three-dimensional motion and rotation, using common MEMS sensor components. This directly relates to the broad scope of "motion parameters" in US8781610. Therefore, it could potentially anticipate claims related to:
     • Claim 1 (Preamble and element (A)): "A method of ball game motion recognition, comprising: (A) obtaining motion parameters corresponding to each sampling time for a motion, wherein the motion parameters comprise acceleration, velocity, stance and position." The reference's description of "full six-dimensional motion parameters (three-dimensional motion and three-dimensional rotation)" closely aligns with the types of motion parameters (acceleration, velocity, stance, and position) that US8781610's claims revolve around. [cite: The full patent text, under "Description" -> "The second approach"]
     • Claims related to the sensor device: Claims specifying the use of accelerometers and gyroscopes for sampling motion data, such as dependent claims that detail the composition of the MEMS sensor device.

To confirm the filing/publication dates precisely and conduct a thorough analysis of all claims, a direct search of these patent numbers on the USPTO website would be necessary.

Obviousness Analysis under 35 U.S.C. § 103 for US Patent 8781610

This analysis identifies combinations of prior art references that would render the claims of US Patent 8781610 obvious to a person having ordinary skill in the art (PHOSITA) as of its priority date of April 29, 2011 [cite: The full patent text, under "Priority date"]. The primary aspects of US8781610's method and apparatus, as described in its Summary, revolve around:

1. Obtaining motion parameters over time.
2. Extracting specific types of feature points (power-assisting path early stage, motion top point, and ball hitting time) using predetermined recognition tactics.
3. Recognizing a predetermined ball game type if the extracted feature points satisfy certain requirements.

The prior art references cited within US8781610 itself provide foundational technologies for motion parameter acquisition.

Prior Art References:

1. US Patent Publication No. US2008/0119269A1 ("GAME SYSTEM AND STORAGE MEDIUM STORING GAME PROGRAM"): Discloses a MEMS sensor device comprising IRDA arrays and a tri-axial accelerometer, which samples acceleration and uses infrared generators to calculate position on a two-dimensional surface. [cite: The full patent text, under "The first approach"]
2. US Patent Publication No. US2008/0049102A1 ("MOTION DETECTION SYSTEM AND METHOD"): Discloses a MEMS sensor device formed by an accelerometer and a gyroscope (or two accelerometers), capable of obtaining "full six-dimensional motion parameters (three-dimensional motion and three-dimensional rotation)." [cite: The full patent text, under "The second approach"]

Combination of US2008/0049102A1 and General Knowledge in Sports Motion Analysis

A PHOSITA in the field of motion recognition for sports, as of April 29, 2011, would find the core concepts of US8781610 obvious by combining the teachings of US2008/0049102A1 with common general knowledge in sports motion analysis and pattern recognition.

1. Obtaining Motion Parameters (Step A of the method claim):
US2008/0049102A1 explicitly teaches a "MOTION DETECTION SYSTEM AND METHOD" that "utilizes the MEMS sensor device formed by an accelerometer and a gyroscope... to obtain full six-dimensional motion parameters (three-dimensional motion and three-dimensional rotation)." [cite: The full patent text, under "The second approach"] This directly addresses the requirement of obtaining comprehensive motion parameters over time. Similarly, US2008/0119269A1 describes obtaining acceleration and position data. Therefore, the acquisition of motion parameters was well-established prior art.

2. Motivation for Combining and Analyzing Sports Motions:
The background section of US8781610 itself articulates a clear motivation for analyzing sports motions: "The technique of path and stance recognition for the spatial accelerated motion can be widely applicable in combination to human body action for detection of human body action in areas such as sports, games, movie technology, medical surgery simulation or action skill training." [cite: The full patent text, under "BACKGROUND"] It further states, "When motion parameters such as information of acceleration, velocity and position of a moving object are obtained, it is generally required to extract a section of integrated motion and to perform path display or expert evaluation based on the motion parameters of the integrated motion section." [cite: The full patent text, under "BACKGROUND"] Specifically for golf, the patent notes that "either professional golfers or amateur golfers would hope to obtain the motion parameters of the integrated motions of their swings to know the quality of the motions and to further obtain evaluation of the motions." [cite: The full patent text, under "BACKGROUND"] This pervasive need for sports motion analysis and evaluation would motivate a PHOSITA to apply motion detection systems like that taught in US2008/0049102A1 to sports activities.

3. Extracting Feature Points for Ball Games (Step B of the method claim):
Given the motivation to analyze sports motions, a PHOSITA would naturally proceed to identify characteristic phases or "feature points" within the acquired motion data. The three feature points claimed in US8781610—"power-assisting path early stage," "motion top point," and "ball hitting time"—are generalized descriptions of fundamental phases common to many ball games:

• Power-assisting path early stage: Represents the initial wind-up or preparation (e.g., golf "take back," soccer "lifting the leg backwards," badminton "raising the racket"). [cite: The full patent text, under "The recognition tactics of the power-assisting path early stage corresponding feature point", "Taking soccer as an example, the motion to kick the soccer ball has the components of lifting the leg backwards, reaching the top point, and kicking the ball", "Taking badminton as another example, the motion also has the components of raising the racket, reaching the top point, and swinging the racket"] A PHOSITA would readily understand that this involves initial movement, often with dominant velocity components in certain directions.
• Motion top point: Corresponds to the apex of the backswing or preparation, often characterized by a temporary change in direction or minimal velocity in a key dimension (e.g., golf "top swing," soccer "reaching the top point"). [cite: The full patent text, under "The recognition tactics of the motion top point corresponding feature point", "Taking soccer as an example, the motion to kick the soccer ball has the components of lifting the leg backwards, reaching the top point, and kicking the ball", "Taking badminton as another example, the motion also has the components of raising the racket, reaching the top point, and swinging the racket"] This is a standard concept in motion analysis.
• Ball hitting time: Corresponds to the impact or final action of the swing/kick (e.g., golf "impact," soccer "kicking the ball," badminton "swinging the racket"). [cite: The full patent text, under "The recognition tactics of the ball hitting time corresponding feature point", "Taking soccer as an example, the motion to kick the soccer ball has the components of lifting the leg backwards, reaching the top point, and kicking the ball", "Taking badminton as another example, the motion also has the components of raising the racket, reaching the top point, and swinging the racket"] A PHOSITA would be aware that impacts are characterized by sharp changes in acceleration or angular velocity.

The "recognition tactics" described in US8781610, such as using ratios of velocities in different dimensions, velocity thresholds, height, acceleration, and changes in position or stance, are all directly derivable from the six-dimensional motion parameters provided by a system like US2008/0049102A1. Developing algorithms based on these readily available kinematic and dynamic metrics to identify specific phases of a known sports motion falls within the realm of routine engineering and optimization for a PHOSITA engaged in sports performance analysis.

4. Recognizing the Motion as a Predetermined Ball Game Type (Step C of the method claim):
Once these characteristic feature points are extracted, recognizing the motion as a "predetermined ball game type" by evaluating "feature point requirements" (e.g., predetermined sequence, number, or graded weight values) is a conventional application of pattern recognition techniques. [cite: The full patent text, under "The feature point requirements of the predetermined ball game type"] Classifying human activities based on patterns of detected sub-events or features from sensor data was a well-known methodology in 2011. For example, if a specific sequence of the "power-assisting path early stage," "motion top point," and "ball hitting time" is detected, a system could logically classify it as a golf swing, soccer kick, or badminton smash, depending on the characteristics of the detected features.

Conclusion of Obviousness

The combination of US2008/0049102A1 (or US2008/0119269A1, or any similar system for obtaining comprehensive motion parameters) with the well-established need for sports motion analysis and the routine application of pattern recognition principles for activity classification would render the claims of US8781610 obvious under 35 U.S.C. § 103. A PHOSITA would have been motivated to combine these elements to develop systems for sports training and evaluation, as explicitly acknowledged by US8781610's own background. The identification of the specific "feature points" and their associated "recognition tactics" represents a predictable application of known analytical techniques to readily available motion data, rather than an inventive step.

Patent Term Adjustments (PTA)

Patent Term Adjustment (PTA) increases the term of a U.S. patent to compensate for certain delays caused by the USPTO during the prosecution of a utility or plant patent application. These delays include:

• Failure to issue an office action within 14 months of the application filing.
• Failure to respond to a reply or an appeal within four months.
• Failure to act on an application within four months after a decision by the Patent Trial and Appeal Board (PTAB) or a federal court.
• Failure to issue a patent within four months after payment of an issue fee.
• Failure to issue a patent within 36 months from the filing date of the application.

The total PTA is added to the standard 20-year lifespan of the patent, measured from its earliest filing date. Applicant-caused delays can reduce any awarded PTA.

For US8781610, the Google Patents record indicates an "Adjusted expiration" date of 2032-05-18. The original filing date was October 7, 2011, and the publication date was July 15, 2014. [cite: The full patent text, under "Filing date", "Publication date"] A standard 20-year term from the filing date would typically lead to an expiration date of October 7, 2031. The "Adjusted expiration" date of May 18, 2032, suggests that a Patent Term Adjustment of approximately 7 months and 11 days (from October 7, 2031 to May 18, 2032) was granted. This PTA would compensate for USPTO delays during the patent's prosecution.

To get the exact PTA calculation, one would typically consult the Issue Notification Letter, which details the USPTO's official determination.

Patent Term Extensions (PTE)

Patent Term Extension (PTE) is available for patents on certain products, such as human drugs, food or color additives, medical devices, animal drugs, and veterinary biological products, to compensate for time lost during regulatory approval processes (e.g., FDA approval). PTE cannot exceed five years and cannot extend the patent term over 14 years from the date of marketing approval.

Given that US8781610 is titled "Method of ball game motion recognition, apparatus for the same, and motion assisting device," it is highly unlikely to be eligible for Patent Term Extension under 35 U.S.C. § 156, as its subject matter does not fall within the categories of products requiring premarket regulatory approval. The patent itself does not mention any FDA or other regulatory approval processes, nor does the Google Patents record or the provided search results indicate any PTEs have been applied for or granted.

Continuation Applications

A continuation application allows an applicant to pursue additional patent claims based on the same specification and drawings of a previously filed "parent" application, while retaining the benefit of the parent's priority date. They must be filed before the parent application issues or becomes abandoned.

The Google Patents record for US8781610 lists "US20120277890A1" as "Other versions." [cite: The full patent text, under "Other versions"] This is a patent application publication. The application number for US8781610 is US13/269,216. Given that US20120277890A1 was published on November 1, 2012 [cite: The full patent text, under "Legal status"], before US8781610 was granted on July 15, 2014 [cite: The full patent text, under "Legal status"], it is likely that US20120277890A1 is the publication of the application that matured into US8781610 (i.e., the parent application).

To definitively identify any continuation applications (or continuations-in-part or divisional applications), a search of the "Related U.S. Application Data" section on the face of US8781610 (or within the USPTO's Patent Public Search or Patent Center databases) would be required. However, based on the provided text, there is no explicit mention of continuation applications derived from US8781610 itself, only the associated application publication.

Divisional Applications

A divisional patent application presents claims that were originally filed with the parent application but were required to be withdrawn or canceled by the USPTO, often due to restrictions requirements. Like continuation applications, they share the same priority date as the parent.

Similar to continuation applications, the provided text does not explicitly state if any divisional applications have been filed based on US8781610. This information would typically be found in the "Related U.S. Application Data" section of the patent document or a detailed search of USPTO databases.

Related Family Members

The patent family of US8781610 includes its own application publication, US20120277890A1. [cite: The full patent text, under "Other versions"] Patent families include a collection of patent documents that cover the same invention and share at least one common inventor, linking patent iterations back to a priority date. They can also include international patent filings.

To identify a comprehensive list of all related family members, including any international counterparts, a dedicated patent family search using tools like the USPTO's Global Dossier or Espacenet would be necessary. The Google Patents entry provides a link to Darts-IP for "Global patent litigation dataset" related to the family, implying the existence of other family members. [cite: The full patent text, under "Legal status"]

Projected Expiration Date

The legal status section of the Google Patents entry for US8781610 explicitly states "Active, expires 2032-05-18" and "Adjusted expiration 2032-05-18." [cite: The full patent text, under "Legal status"]

Therefore, the projected expiration date for US Patent 8781610 is May 18, 2032. This date accounts for any Patent Term Adjustment granted to the patent. Utility patents generally expire 20 years from their earliest effective U.S. filing date, subject to any adjustments or extensions. Since the filing date was October 7, 2011, and the adjusted expiration is May 18, 2032, a PTA of approximately 7 months and 11 days was applied.