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Tuesday, June 24, 2025

Which patent granted in Caledonia in week ending Aug. 7 took the longest?

The longest time between a patent being filed and granted in the week ending Aug. 7 in Caledonia was 1,545 days, according to the United States Patent and Trademark Office.

The patent application was filed by Aspen Surgical Products, Inc. for a disposable over-the-head gown. It was filed on May 11, 2017 before being approved on Aug. 3, 2021.

It was the only patent approved in the week ending Aug. 7 from Caledonia.

Though patents are required for inventions and products, the granting of a patent is not a guarantee for success. Dennis Crouch, co-director of the Center for Intellectual Property & Entrepreneurship said roughly 50 percent of patents expire prematurely due to costs.

Longest patent application period in Caledonia for week ending Aug. 7
Applicant NameFiling DateGranted Date
Aspen Surgical Products, Inc.2017-05-112021-08-03

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