Invalidity dossier
US 12478181
Adjustable drawer
Current assignee: CHENGDU HUIYUZHONGTAI TECHNOLOGY CO., LTD.
Added 6/9/2026, 12:00:19 PM
Active provider: Google · gemini-2.5-flash
Auto-generating section 1 of 2: Extensions…
Each section takes ~30-60s with web-search grounding. Keep this tab open — sections will fill in below as they complete.
Patent summary
Title, assignee, inventors, filing/issue dates, abstract, and a plain-language overview of the claims.
Here is a concise summary of US patent 12478181:
US Patent 12478181 Summary
- Title: Adjustable drawer
- Assignee: CHENGDU HUIYUZHONGTAI TECHNOLOGY CO., LTD.
- Inventors: Hongyan Wang
- Filing Date: 2024-10-23
- Issue Date: 2025-11-25
- Abstract: An adjustable drawer is disclosed. The drawer includes a drawer body with multiple connecting elements that form a drawer configuration. At least one connecting element is movable along the width direction for adjustment, and at least one is movable along the length direction for adjustment, allowing the drawer body to expand or contract. This design enables the adjustable drawer to match various cabinets by adjusting its length and width.
Plain-Language Overview of Independent Claims:
- Claim 1: This claim describes an adjustable drawer with a body made of multiple connecting elements and sliding rails. The connecting elements fit together to form the drawer and can move to adjust both the width and length, making the drawer expandable or contractible. Specifically, it details how two types of connecting elements (first and second) interlock: the first connecting element has a side wall with a bent portion forming a first sliding groove, and the second connecting element has a side wall with a bent portion forming a second sliding groove that is narrower and slides into the first groove. These connecting elements are partially stacked to create an adjustable section (first stacking portion). Their bottom walls have multiple openings (first openings) arranged for width or length adjustment. The elements are secured by aligning a pair of these openings and using a fastener.
- Claim 10: This claim describes an adjustable drawer with a body made of multiple connecting elements. These elements join to form the drawer and can be moved to adjust its width and length, allowing it to expand or contract. Each connecting element has a pattern of distinct, non-communicating openings on its bottom surface, arranged in rows and columns that are perpendicular to each other. Fasteners are inserted into these openings to connect the elements and adjust the drawer.
- Claim 17: This claim combines aspects of claims 1 and 10. It describes an adjustable drawer with a drawer body, connecting elements, and sliding rails. The connecting elements form a drawer that is adjustable in width and length, and can expand or contract. Similar to Claim 1, it specifies first and second connecting elements with bent portions and sliding grooves for interlocking, where the second groove slides into the first. Additionally, similar to Claim 10, each connecting element has a bottom surface with an array of distinct, non-communicating openings arranged in perpendicular rows and columns for securing the adjustable configuration.
CAFC 2026 Dockets:
No CAFC (Court of Appeals for the Federal Circuit) 2026 dockets were found for US12478181 in the provided patent information. The patent explicitly notes a "US case filed in Illinois Northern District Court" with case number 1:26-cv-02292, which is a district court, not the CAFC.## US Patent 12478181: Adjustable Drawer Summary and Claim Analysis
Patent Number: US12478181
Title: Adjustable drawer
Assignee: CHENGDU HUIYUZHONGTAI TECHNOLOGY CO., LTD.
Inventors: Hongyan Wang
Filing Date: 2024-10-23
Issue Date: 2025-11-25
Abstract: An adjustable drawer is disclosed that includes a drawer body with a plurality of connecting elements. These connecting elements join together to form a drawer configuration, with at least one element movable along the width direction and at least one movable along the length direction for adjustment. This design allows the drawer body to be expandable or contractible, enabling it to match various cabinet sizes.
Plain-Language Overview of Independent Claims:
Claim 1: This claim describes an adjustable drawer featuring a drawer body composed of multiple connecting elements and sliding rails. The connecting elements assemble to form the drawer, with certain elements capable of movement in both width and length directions, allowing the drawer to expand or contract. Key to this adjustability are specific "first" and "second" connecting elements. Each first connecting element has a bottom wall and a first side wall with a bent portion that creates a "first sliding groove." Each second connecting element also has a bottom wall and a second side wall with a bent portion forming a "second sliding groove," which is narrower than the first and is designed to slide into it when the elements are joined. Two of these connecting elements are partially stacked to form a "first stacking portion." Their bottom walls contain multiple "first openings" arranged either along the width or length. The elements are secured by aligning specific first openings from each connecting element within the first stacking portion and inserting a fastener.
Claim 10: This claim focuses on an adjustable drawer with a drawer body made from a plurality of connecting elements. These elements join to create the drawer configuration, and are movable for both width and length adjustment, making the drawer expandable or contractible. A central feature is that each connecting element's bottom surface has an array of distinct, non-communicating openings. This array is structured with multiple rows and columns, where the openings within each row are separate from each other, and similarly for the columns, with the column direction being perpendicular to the row direction. The connecting elements are fastened together by inserting fasteners into at least one of these openings.
Claim 17: This claim also describes an adjustable drawer comprising a drawer body with multiple connecting elements and sliding rails, allowing for width and length adjustability, and overall expansion or contraction. Similar to claim 1, it specifies "first" and "second" connecting elements. Each first connecting element has a first bottom wall and a first side wall with a bent portion forming a "first sliding groove" of a certain width. Each second connecting element has a second bottom wall and a second side wall with a bent portion forming a "second sliding groove," which is narrower than the first and is designed to be slidably received within it. Furthermore, similar to claim 10, each of the plurality of connecting elements features an array of distinct, non-communicating openings on its bottom surface, arranged in perpendicular rows and columns.
CAFC 2026 Dockets:
Based on the provided patent information, there is no authoritative information indicating any CAFC (Court of Appeals for the Federal Circuit) 2026 dockets specifically for US12478181. The patent mentions "Family has litigation" and specifies a "US case filed in Illinois Northern District Court" with the case identifier 1:26-cv-02292. This indicates litigation at a District Court level, not the CAFC.
Generated 6/9/2026, 12:01:54 PM