Prior art — US Patent 11076735

Prior Art Analysis for U.S. Patent 11,076,735

Here is an analysis of the most relevant prior art cited during the prosecution of U.S. Patent 11,076,735. The key inventive concept of the patent, as defined in independent claims 1 and 13, is a surface cleaning system where the apparatus, when docked on a cleaning and charging tray, will disable the battery charging circuit while it performs an automatic self-cleaning "cleanout cycle." For a prior art reference to anticipate a claim under 35 U.S.C. § 102, it must disclose every element of that claim in a single document.

1. U.S. Patent Application Publication No. US 2018/0344070 A1

Full Citation: US 2018/0344070 A1; Stoll, et al. (Assignee: Kärcher).
Publication Date: December 6, 2018 (Filed: May 30, 2018).
Brief Description: This document describes a wet-cleaning device with a base station. The base station is designed to receive the cleaning device for storage and also for performing a cleaning process on the device's cleaning roller. The base station includes a flushing fluid tank and a suction device to draw the dirty water away from the roller. The system contemplates both charging the battery and cleaning the roller within the base station.
Potential Anticipation of Claims: None. This reference is highly relevant as it discloses a surface cleaner with a docking station that performs a self-cleaning cycle on a brushroll. It explicitly mentions that the base station can be equipped with a charging device for charging the battery of the wet-cleaning device. However, Stoll fails to teach or suggest the critical limitation of the '735 patent: disabling the battery charging circuit during the self-cleaning cycle. Stoll describes the functions of cleaning and charging as capabilities of the base station but does not disclose a mode where one is deactivated for the other to proceed. Therefore, it does not anticipate claims 1 or 13.

2. U.S. Patent No. 10,092,155 B2

Full Citation: US 10,092,155 B2; Grey, et al. (Assignee: Bissell Inc.).
Issue Date: October 9, 2018 (Filed: December 1, 2016).
Brief Description: This patent, also assigned to Bissell, is incorporated by reference in the '735 patent. It describes the foundational structure of a multi-surface wet vacuum cleaner, including details of the fluid delivery system, recovery system, and a hybrid brushroll suitable for both hard and soft surfaces. It provides the general mechanical and operational context for the apparatus described in the '735 patent.
Potential Anticipation of Claims: None. While this patent describes the type of surface cleaning apparatus in detail, it does not disclose a docking station with a self-cleaning mode, nor does it mention any interaction between a self-cleaning cycle and a battery charging circuit. Its focus is on the cleaning apparatus itself during normal floor-cleaning operation. As it is missing the entire concept of a self-cleaning cycle in a tray where charging is disabled, it cannot anticipate claims 1 or 13.

3. U.S. Patent Application Publication No. US 2017/0055848 A1

Full Citation: US 2017/0055848 A1; Grey, et al. (Assignee: Bissell Inc.).
Publication Date: March 2, 2017 (Filed: August 31, 2015).
Brief Description: An earlier application from the same assignee, this document also describes a multi-surface cleaning apparatus with fluid delivery and recovery systems. It details features like a removable nozzle, brushroll assembly, and tank configurations. This publication provides background and foundational technology for the apparatus later improved upon in the '735 patent.
Potential Anticipation of Claims: None. Similar to US 10,092,155 B2, this reference describes the core cleaning machine but lacks any disclosure of a self-cleaning mode performed in conjunction with a storage or charging tray. The inventive concept of disabling a battery charging circuit during such a cycle is entirely absent. Therefore, it does not anticipate claims 1 or 13.

4. U.S. Patent Application Publication No. US 2018/0177372 A1

Full Citation: US 2018/0177372 A1; Han, et al. (Assignee: LG Electronics Inc.).
Publication Date: June 28, 2018 (Filed: December 22, 2017).
Brief Description: This publication discloses a cleaning robot and a charging station. The charging station includes a cleaning unit for automatically cleaning the robot's brushes after it docks. The robot docks, connects to charging terminals, and then a cleaning process involving water supply and suction can be initiated to clean the robot's components.
Potential Anticipation of Claims: None. This reference teaches a device that combines docking for charging and a self-cleaning function. However, it does not disclose the specific limitation of disabling the charging function while the cleaning takes place. In fact, it suggests these operations can be concurrent. Without the express teaching of disabling the battery charging circuit during the cleanout cycle, it does not anticipate the key element of claims 1 and 13.

5. U.S. Patent Application Publication No. US 2018/0255938 A1

Full Citation: US 2018/0255938 A1; Oh, et al. (Assignee: LG Electronics Inc.).
Publication Date: September 13, 2018 (Filed: March 9, 2018).
Brief Description: This document describes a hand-held cleaner with a docking station or "cradle." The cradle is capable of charging the cleaner's battery and also has a function for cleaning the filter of the handheld cleaner using a suction motor within the cradle itself.
Potential Anticipation of Claims: None. While this reference discloses a docking station that performs both charging and a type of self-maintenance (filter cleaning), it does not teach disabling the charging process during the cleaning cycle. The core novelty of the '735 patent—the specific control logic of disabling the charging circuit while the self-clean cycle runs—is not present. Therefore, this reference does not anticipate claims 1 or 13.

Summary of Prior Art Analysis

The prior art cited against U.S. Patent 11,076,735 establishes that the concepts of wet/dry surface cleaners, docking stations, battery charging, and even self-cleaning cycles within a docking station were known in the art before the '735 patent's priority date. However, none of the examined references disclose the specific, central limitation of claims 1 and 13: the functional step of disabling the battery charging circuit during the automatic self-cleaning cycle. It is this specific control method, which prevents two high-power-draw events from occurring simultaneously, that appears to be the novel and non-obvious contribution recognized by the USPTO during examination. The litigation outcome against Tineco's redesigned products further reinforces that this "disabling" limitation is the critical point of novelty for the patent.