Obviousness

To assess the obviousness of US Patent 9591117 under 35 U.S.C. § 103, we will consider combinations of the prior art references explicitly discussed within the patent itself and publicly available general knowledge at the time of the patent's priority date (November 21, 2014).

The patent US9591117 claims a computer-implemented method and system for delivering text messages, emails, and messenger application messages to a user engaged in an activity (e.g., driving, exercising, working), emphasizing automatic notifications, reading content aloud, and hands-free interaction (e.g., gestures without looking at the screen). The patent itself identifies shortcomings in existing solutions:

• US 2013/0275899, which proposes a "limited-distraction user interface," is criticized for still relying on "substantial input from the user."
• U.S. Pat. Nos. 8,364,183, 8,526,973, and 8,359,014 (referred to as "Busykey patents") describe a system where a user presses a "Busykey" to automatically send a pre-typed message or play pre-recorded audio. These are criticized because they "still require substantial input from the user since the user has to choose and press on a Busykey button" and require the user to "take his or her eyes off the road to find the Busykey button."

The patent explicitly states a need in the art "to allow a person to receive emails and other messages while the person is engaged in an activity that limits the person's ability to read emails and other messages." This statement provides a clear motivation for a Person Having Ordinary Skill in the Art (PHOSITA) to combine and modify existing technologies to address these identified deficiencies.

Combination of Prior Art for Obviousness Analysis

A PHOSITA in 2014 would have possessed knowledge of:

• Mobile operating systems' capabilities for automatic message detection and notification (e.g., alerts, vibrations, sounds for incoming emails, text messages, and messenger app notifications).
• Text-to-Speech (TTS) technology for converting text into spoken words, widely available and used for accessibility features, navigation systems, and voice assistants.
• Basic touchscreen gestures (taps, swipes) for interaction, common on smartphones.
• Speech recognition technology for voice commands.
• The concept of managing asynchronous messages in a queue.

We will consider the following combination of prior art references:

1. US 2013/0275899: This reference establishes the concept of a "limited-distraction user interface" designed for contexts where user attention is restricted.
2. U.S. Pat. No. 8,364,183 (representative of US 8,526,973 and US 8,359,014): These patents introduce the idea of a mobile device acting automatically in response to incoming communications when the user is "busy," albeit requiring a physical "Busykey" press.

Motivation to Combine and Modification

The very problems articulated in US959117's background section provide a strong motivation for a PHOSITA to combine and adapt the described prior art. The core problem is the "substantial input" and the need to "take his or her eyes off the road" still required by existing "limited-distraction" systems.

A PHOSITA would be motivated to:

• Improve upon the "limited-distraction user interface" of US 2013/0275899 by further reducing or eliminating the need for visual or complex manual input.
• Enhance the "automatic response" functionality of the Busykey patents by making the initial notification and content delivery truly hands-free and less dependent on specific button presses, thereby addressing the safety concern of looking away from the road.

This motivation would lead a PHOSITA to combine the limited-distraction context (US 2013/0275899) with the concept of automated message handling (Busykey patents), and then implement the following modifications using known technologies:

Obviousness of Independent Claims

Independent Claim 1 (Method Claim):

• a) Determining without any input by a user that a message has arrived while engaged in an activity: Modern mobile operating systems inherently detect incoming messages (text, email, messenger) automatically and generate notifications. The concept of a "user engaged in an activity" (e.g., driving) is well-covered by US 2013/0275899 (limited-distraction context) and the Busykey patents (user is "busy"). It would be obvious to integrate the automatic message detection of a standard mobile OS with the context determination (e.g., driving mode) provided by US 2013/0275899.
• b) Informing the user without any input by the user that the message has arrived from a sender: Given the context of limited distraction (US 2013/0275899) and the need to avoid visual interaction (as criticized in the Busykey patents), it would be an obvious application of widely available Text-to-Speech (TTS) technology to audibly announce the sender's identity upon automatic message arrival. This directly addresses the problem of having to look at a screen.
• c) Proceeding with a conditional read-aloud step:
  • (i) Allowing time to stop reading aloud; if no input, reading aloud the body automatically: In a hands-free environment, after an automatic announcement, providing a default action (reading the message body aloud using TTS) if the user takes no explicit "stop" action is a logical design choice to ensure information delivery without requiring further interaction from a busy user. This improves upon the Busykey patents' automatic but limited responses (pre-typed text, pre-recorded audio) by providing the full message content via a non-visual channel. A PHOSITA would aim to reduce explicit user input in a limited-distraction environment.
  • (ii) Allowing time to command reading aloud; if input, reading aloud the body: This is a common interactive paradigm, akin to "Press X to hear your message." A PHOSITA would readily implement this using simple, non-visual input like gestures (tapping/swiping) or voice commands, which were known methods for hands-free interaction by 2014.

Independent Claim 13 (Mobile Phone Claim) and Claim 14 (System Claim 1):
These claims contain similar method steps, but in the context of a mobile phone or system comprising a processor, memory, and touch screen.

• Content Analysis ("analyzing without any input by the user a content"): Extracting sender, subject (for email), and body from a message is a fundamental function of any messaging application and is a prerequisite for a TTS system to read the message aloud. This analysis is performed automatically by the application without user initiation.
• Running an application configured to deliver messages: This is inherent to any mobile device providing messaging services.
  The remaining elements for arrival determination, informing, and conditional read-aloud are rendered obvious by the same reasoning as for Claim 1.

Independent Claim 16 (System Claim 2):
This claim describes specific modules:

• Queue Notification Module for placing messages in a single queue: For a system designed to deliver various message types (email, text, messenger) in a hands-free, sequential manner, it would be an obvious architectural decision for a PHOSITA to consolidate these messages into a single chronological queue for consistent processing and playback. This is a logical extension of standard notification queuing mechanisms in operating systems.
• Analyzer Module for analyzing content without user input: As discussed for Claim 13, automatic parsing of message content is a fundamental and obvious precursor to extracting information for TTS.
• Text-to-Speech Module configured for informing and conditional read-aloud: This module directly implements the TTS functionalities for announcing the sender and reading the message body. As established, applying TTS in a limited-distraction, hands-free context to overcome the limitations of prior art (like Busykeys requiring visual interaction) is obvious.

Conclusion

The invention claimed in US9591117, particularly the independent claims, would have been obvious to a PHOSITA at the time of invention. The motivation to combine the references stems directly from the patent's own identification of deficiencies in existing solutions (US 2013/0275899 and the Busykey patents) regarding "substantial user input" and the need for users to visually interact with devices in distracting environments. A PHOSITA, aiming to create a truly hands-free messaging experience, would naturally combine the concepts of limited-distraction interfaces with automatic message handling, and then integrate well-known technologies such as TTS, automatic message detection and parsing, and simple touchscreen gestures (tapping/swiping) to enable non-visual notification and interaction. The specific "modes" (Drive, Active, Work) and a unified message queue are logical design choices for such an integrated system.