Trademark Overview
On Friday, December 26, 2025, a trademark application was filed for CALLKROON with the United States Patent and Trademark Office. The USPTO has given the CALLKROON trademark a serial number of 99566496. The federal status of this trademark filing is NEW APPLICATION - ASSIGNED TO EXAMINER as of Monday, April 27, 2026. This trademark is owned by Shenzhen Runxin E-commerce Technology Co., Ltd.. The CALLKROON trademark is filed in the Toys & Sporting Goods Products category with the following description:
Articles of clothing for toys; Cube-type puzzles; Jigsaw and manipulative puzzles; Jigsaw puzzles; Mosaic puzzles; Play mats for the purpose of putting together puzzles