Patent snapshot
US 12,723,855 is a utility patent titled “Practice Weighted Insert for Firearm Magazine”, invented by Eric Hanson, Jennifer Hanson, Michael Finocchiaro and James E. O'Shea JR..
The application was filed on August 29, 2024 and granted on September 1, 2026, 2 years later.
It is one of the patents our firm has obtained in the Electrical — Power & Circuits area.
Key dates and patent term
| Application filed | August 29, 2024 | |
|---|---|---|
| Patent granted | September 1, 2026 | 2 years in prosecution at the U.S. Patent Office |
| Utility term expires (nominal) | August 29, 2044 | 20 years from the earliest U.S. non-provisional filing date. |
The expiration date is calculated from the grant and filing dates on the face of the patent. The actual date may vary based on patent-term adjustment (patent office delay), terminal disclaimer (agreeing to a shorter term), or failing to pay a maintenance fee (due before years 4, 8, and 12). This website is for information purposes only and is not legal advice.
What the classification means
Patent offices file every granted patent under the Cooperative Patent Classification (CPC) scheme. These are the technology areas US 12,723,855 was placed in — a good shortcut to what the invention is considered to be, and to the prior art an examiner would have searched.
- G09B
Educational or demonstration appliances; appliances for teaching, or communicating with, the blind, deaf or mute; models; planetaria; globes; maps…
Bibliographic details
| Patent number | US 12,723,855 |
|---|---|
| Title | Practice Weighted Insert for Firearm Magazine |
| Inventors | Eric Hanson; Jennifer Hanson; Michael Finocchiaro; James E. O'Shea JR. |
| Filing date | August 29, 2024 |
| Grant date | September 1, 2026 |
| Category | Electrical — Power & Circuits |
Full text as published by the U.S. Patent Office
The sections below reproduce the official text of US 12,723,855 for reference. Open a section to read it.
Abstract
A weighted safety-insert for a magazine of a firearm. The safety-insert includes a body and a slidable portion. The body includes a protrusion extending downwardly from a bottom surface, and a channel extends within each of first and second side walls. A pair of flanges extend outwardly from the side walls, adjacent the bottom surface. The slidable portion, includes a top surface, and first and second side wall, each having an upper end disposed higher than the top surface and terminating in an inwardly facing lip. The slidable portion is adapted to engage the body such that the top surface of the slidable portion rests against the top surface of the body, the inwardly facing lips being slidably disposed within the channels in the side walls of the body or a prismatic protrusion of the slideable portion being slidably disposed in a channel in the top side of the body.
The full text of this recently granted patent is not yet published in machine-readable form. The complete specification is in the PDF above.
US 12,723,855: questions and answers
What is US Patent 12,723,855 about?
US 12,723,855, “Practice Weighted Insert for Firearm Magazine”, is a utility patent granted by the United States Patent and Trademark Office on September 1, 2026. In brief: A weighted safety-insert for a magazine of a firearm.
Who invented US Patent 12,723,855?
The named inventors are Eric Hanson, Jennifer Hanson, Michael Finocchiaro, James E. O'Shea JR..
When was US Patent 12,723,855 filed?
The application was filed on August 29, 2024 and the patent granted on September 1, 2026.
When does US Patent 12,723,855 expire?
The nominal expiration date is August 29, 2044. 20 years from the earliest U.S. non-provisional filing date.
Who was the patent attorney for US Patent 12,723,855?
This patent was prosecuted by Feigin & Fridman, LLC, patent attorneys in New York and New Jersey. Contact us to discuss protecting your own invention.
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Thinking about a patent of your own?
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