US 11731682

Here's a concise summary of US Patent 11731682:

• Title: Removable seat attachment for a stroller
• Assignee: Baby Jogger Ii LLC (Current)
• Inventors: Jon Hee Lee, Megan Roe, Stacy Noel Simpson, Mark Zehfuss
• Filing Date: June 16, 2020
• Issue Date: August 22, 2023
• Abstract: The patent describes a stroller designed to easily add or remove a second seat. It features a stroller frame with front and rear wheels, and a primary seat. The key innovation lies in specialized seat attachment housings on the frame, each containing a cavity to receive a removable seat attachment adapter. These housings include a door cover that can be manually opened or closed to secure or allow access to the cavity. Once the adapters are in place, a second seat can be attached to them. This system allows a single stroller to be converted into a double stroller as needed.

Plain-Language Overview of Independent Claims:

• Independent Claim 1: This claim describes a stroller system. It includes a basic stroller with a frame, wheels (front and rear), and a main seat. Additionally, it has two special housings on the stroller frame, each with an opening to accept a seat adapter and a manually adjustable door to cover this opening when not in use. The claim specifies that two seat attachment adapters are designed to be removed and reattached to these housings, and a second seat can then be removably connected to these adapters.

• Independent Claim 8: This claim is similar to Claim 1 but adds a specific feature to the door covers of the seat attachment housings. In this version, the door covers are designed to be spring-biased, meaning they automatically return to a closed position unless held open.

• Independent Claim 15: This claim focuses on the removable seat attachment adapter itself, rather than the entire stroller. It describes an adapter with a first end that connects to the stroller's housing and a second end that connects to a seat. A key feature is a spring-loaded latching tab on the adapter. This tab, which is normally extended, locks the adapter into the stroller housing. It can be retracted using a release button, allowing the user to remove the adapter with one hand.

• Independent Claim 20: This claim describes a stroller with similar components to Claim 1 (frame, wheels, first seat, and seat attachment housings for adapters). The distinguishing feature here is that each seat attachment housing has an opening at the top and the cavity provides a "through-hole" that is open to the environment. This design helps prevent liquids and debris from accumulating inside the cavity when the adapter is not installed.

Litigation/Docket Information:

As of April 26, 2026, the patent US11731682 is active.
The patent family has ongoing litigation. There is a PTAB (Patent Trial and Appeal Board) case, IPR2025-01122, which was filed and instituted and is currently pending. Additionally, a US case has been filed in the Delaware District Court (1:24-cv-00723).

A search of CAFC 2026 dockets for US11731682 at the current date did not yield specific results indicating an active appeal for this patent in the Court of Appeals for the Federal Circuit for 2026, beyond the general litigation mentioned in the Google Patents data, which primarily points to PTAB and District Court actions. It's possible an appeal could arise from the existing PTAB or District Court cases in the future.