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Lake County Gazette

Saturday, October 4, 2025

How long did Deerfield inventors wait for patents granted in week ending Aug. 7?

The longest time between a patent being filed and granted in the week ending Aug. 7 in Deerfield was 1,887 days, according to the United States Patent and Trademark Office.

The patent application was filed by Walgreen Company for a systems and methods for secure prescription status updates using a mobile device. It was filed on June 3, 2016 before being approved on Aug. 3, 2021.

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.

There were five patents granted for Deerfield inventors in the week ending Aug. 7.

Longest patent application period in Deerfield for week ending Aug. 7
Applicant NameFiling DateGranted Date
Pregis Innovative Packaging, LLC2017-09-292021-08-03
Pregis Innovative Packaging, LLC2019-08-142021-08-03
Caterpillar, Inc.2019-02-222021-08-03
Caterpillar, Inc.2018-10-112021-08-03
Walgreen Company2016-06-032021-08-03

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