How Apps Pass Touch Gestures Between Each Other
A method for a device to decide which app should handle a user's touch gesture when multiple apps are running at the same time.
Original patent title: “Event recognition”
A method for a device to decide which app should handle a user's touch gesture when multiple apps are running at the same time. Granted to Apple Inc in 2016 with 36 claims and 6 forward citations.
Key facts
Coverage
What does this patent actually cover?
This patent describes a system for managing touch input conflicts between two software applications running on a device. When a user touches the screen, the device first checks if the 'first' application (like an operating system or launcher) recognizes the gesture. If that app does not recognize the input, the device automatically passes the touch data to the 'second' application. The second application then checks its own list of gesture recognizers to see if it can process the input. This ensures that gestures are routed to the correct app without the user needing to manually switch contexts.
The gap
What does this patent NOT cover?
- Does not cover hardware-level touch sensing or the physical digitizer technology.
- Does not cover gestures that are successfully recognized by the first application in the chain.
- Does not cover input methods that do not rely on gesture recognizers, such as raw coordinate tracking without semantic meaning.
- Does not cover multi-touch input processing that is handled entirely by a single application.
These exclusions are unique to PatentBrief — derived from the actual claim language, not patent-office boilerplate.
What made this novel
The innovation lies in the hierarchical delegation of touch events: the system treats gesture recognition as a filter that apps pass through, allowing the device to dynamically reassign input ownership based on whether an app 'understands' the specific gesture pattern.
Schematic visualization of the patent's claim structure. Hand-drawn diagrams in progress for each landmark patent.
Where you've seen this
Real-world examples
iOS Control Center gestures
Android notification shade pull-downs
System-wide gesture navigation bars
Why it matters
The bigger picture
This patent addresses the fundamental problem of touch-based multitasking. It provides a structured way for operating systems to handle input delegation, which is essential for modern mobile interfaces where background tasks and foreground apps must coexist seamlessly. It helps prevent 'input stealing' where one app might accidentally block another from receiving user commands.
Filed
October 1, 2013
Granted
November 1, 2016
Market context
Who's building on this
Companies in this space
Apple continues to refine this logic within its iOS and iPadOS frameworks. Other major mobile operating system developers, such as Google for Android, utilize similar event-delegation architectures to manage the interaction between system-level gestures and individual application inputs.
Market impact
This patent formalized the logic behind modern mobile multitasking, where system-level gestures (like swiping from the edge) must coexist with app-specific gestures. It helped standardize how mobile operating systems prioritize user input, reducing interface friction and preventing conflicting commands in complex, multi-layered software environments.
Claim 1 — Plain English
What this patent covers
This patent describes a system for managing touch input conflicts between two software applications running on a device. When a user touches the screen, the device first checks if the 'first' application (like an operating system or launcher) recognizes the gesture. If that app does not recognize the input, the device automatically passes the touch data to the 'second' application. The second application then checks its own list of gesture recognizers to see if it can process the input. This ensures that gestures are routed to the correct app without the user needing to manually switch contexts.
The clever bit
The innovation lies in the hierarchical delegation of touch events: the system treats gesture recognition as a filter that apps pass through, allowing the device to dynamically reassign input ownership based on whether an app 'understands' the specific gesture pattern.
What it does not cover
- Does not cover hardware-level touch sensing or the physical digitizer technology.
- Does not cover gestures that are successfully recognized by the first application in the chain.
- Does not cover input methods that do not rely on gesture recognizers, such as raw coordinate tracking without semantic meaning.
- Does not cover multi-touch input processing that is handled entirely by a single application.
Patent timeline
Application submitted to the patent office
Application published, typically 18 months after filing
Patent officially issued
PatentBrief Score
Impact Score
Strong
Citation count
17/40
Early citations
Claim breadth
20/20
Very broad protection
Recency
10/20
Granted 5–10 years ago
Assignee scale
20/20
Major company or institution
PatentBrief Impact Score — based on citation count, claim breadth, recency, and assignee scale. Not a legal assessment.
Heuristic Value Estimate
What this patent might be worth
$154K – $492K
Midpoint $307K · 7.3 yr remaining · industry ×1.6
Heuristic only — blends forward/backward citation counts, claim scope, time remaining, litigation history, and CPC-derived industry baseline. Real valuations need a professional appraisal.
The original legal language
Original claims
36 claims as filed with the patent office.
Concepts involved
Citations
Patent lineage
Cite this patent
Shaffer, J. H., Kocienda, K. L., & Chaudhri, I. (2016). How Apps Pass Touch Gestures Between Each Other (U.S. Patent No. 9,483,121). U.S. Patent and Trademark Office. https://patentbrief.org/patent/us/9483121/force-touch-3d-touch
Auto-generated from the patent record. Double-check author order and the issue date against the official USPTO document before submitting.
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Common Questions
Frequently Asked Questions
What does How Apps Pass Touch Gestures Between Each Other cover?
A method for a device to decide which app should handle a user's touch gesture when multiple apps are running at the same time.
Who owns patent US 9483121?
Apple Inc owns this patent, granted in 2016.
When does this patent expire?
This patent is expected to expire on November 1, 2036, when the invention enters the public domain.
What is patent US 9483121 cited by?
This patent has been cited by 6 later patents that build on its ideas.
What problem does this patent solve?
This patent addresses the fundamental problem of touch-based multitasking. It provides a structured way for operating systems to handle input delegation, which is essential for modern mobile interfaces where background tasks and foreground apps must coexist seamlessly. It helps prevent 'input stealing' where one app might accidentally block another from receiving user commands.
What does this patent NOT cover?
Does not cover hardware-level touch sensing or the physical digitizer technology.
Same assignee
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