Prior art — US Patent 7670612B2

Analysis of Most Relevant Prior Art for U.S. Patent 7,670,612 B2

This analysis identifies and examines the most relevant prior art cited during the prosecution of U.S. Patent 7,670,612 B2 (the '612 patent). The focus is on determining whether any single reference anticipates the independent claims of the '612 patent under 35 U.S.C. § 102. The priority date of the '612 patent is April 10, 2002; all references discussed predate this and qualify as prior art.

The core invention of the '612 patent, as defined by independent claims 1 and 58, is a hard-shell capsule with at least two separate chambers containing different ingredients in different physical states (e.g., a solid and a liquid). Claim 1 applies this to nutraceuticals, vitamins, dietary supplements, and minerals generally, while claim 58 specifically claims a vitamin/mineral combination.

Based on a review of the cited references, the following patents are considered most relevant.

1. U.S. Patent 5,679,376 A

Full Citation: U.S. Patent 5,679,376 A, "Capsule having two chambers for separately housing two different substances."
Publication Date: October 21, 1997
Brief Description: This patent describes a hard gelatin capsule divided into two distinct chambers by a separating plug. The express purpose is to separately house two different substances, particularly those that are incompatible. The patent explicitly states that the substances can be in different physical forms, such as a powder in one chamber and a liquid, paste, or gel in the other. The intended contents include "pharmaceutical, cosmetic, dietetic or food products."
Potential Anticipation Analysis:
- Claim 1: This reference is highly relevant and discloses nearly all elements of claim 1. It teaches a (1) hard-shell capsule with (2) two chambers containing (3) two different substances in (4) different physical states (solid/liquid). A standard gelatin capsule is designed for (5) immediate release. The disclosure of "dietetic... products" arguably meets the limitation that the ingredients be (6) a "dietary supplement." Because this single reference appears to disclose every element of the claim, it could potentially be used to argue for anticipation of claim 1. The patentability of claim 1 likely rests on the argument that "dietetic products" is not fully coextensive with the '612 patent's broader group of "nutraceuticals, vitamins, dietary supplements, or minerals."
- Claim 58: The '376 patent does not explicitly disclose the specific combination of a vitamin in one chamber and a mineral in the other. Therefore, it does not anticipate claim 58.

2. U.S. Patent 6,294,192 B1

Full Citation: U.S. Patent 6,294,192 B1, "Capsule for the separate administration of pulverulent or liquid active ingredients."
Publication Date: September 25, 2001
Brief Description: This patent discloses a capsule with at least two chambers separated by a partition wall, intended for the separate administration of incompatible active ingredients. It explicitly teaches that one chamber may contain a pulverulent (powder) ingredient while the other contains a liquid or pasty ingredient. The capsule body and cap configuration are consistent with hard-shell capsules.
Potential Anticipation Analysis:
- Claim 1: This reference strongly teaches the physical structure claimed. It discloses a (1) multi-compartment capsule, likely a (2) hard-shell type, for separating (3) different ingredients, where one is a (4) solid (powder) and the other is a (5) liquid. The use of standard materials implies (6) immediate release. However, the reference refers broadly to "active ingredients" and does not specify that they must be from the group of nutraceuticals, vitamins, dietary supplements, or minerals. This failure to disclose the specific nature of the ingredients prevents it from anticipating claim 1 under a strict interpretation of § 102.
- Claim 58: The '192 patent does not disclose the specific vitamin/mineral combination and thus does not anticipate claim 58.

3. U.S. Patent 6,083,531 A

Full Citation: U.S. Patent 6,083,531 A, "Multi-compartment capsule."
Publication Date: July 4, 2000
Brief Description: This patent describes a multi-compartment dosage form using a "capsule-in-capsule" design. A smaller, sealed capsule (the inner compartment) is placed inside a larger, standard hard-shell capsule (the outer compartment). The patent explicitly discloses filling the inner capsule with a liquid and the outer compartment with a solid (e.g., powder, pellets), or vice-versa, thereby separating two different ingredients in two different physical states.
Potential Anticipation Analysis:
- Claim 1: This reference discloses the core structural and physical state limitations of claim 1: a (1) multi-compartment (2) hard-shell capsule containing (3) different ingredients in (4) different physical states (liquid/solid). The use of standard capsules implies (5) immediate release. As with the '192 patent, it speaks generally of "active ingredients" and does not explicitly list the specific ingredient types required by claim 1, which prevents it from being a direct anticipation.
- Claim 58: The '531 patent does not disclose the specific vitamin/mineral combination and thus does not anticipate claim 58.

4. U.S. Patent 4,738,724 A

Full Citation: U.S. Patent 4,738,724 A, "Process for making a two-piece, hard-shell capsule for containing liquid formulations."
Publication Date: April 19, 1988
Brief Description: This is a foundational patent describing the technology for creating a capsule-in-capsule dosage form. It teaches placing a smaller, ingredient-filled capsule inside a larger hard-shell capsule and filling the void with a liquid, which is then sealed in. This creates two separate compartments that can hold different substances in different physical states (e.g., a solid in the inner capsule and a liquid in the outer space).
Potential Anticipation Analysis:
- Claim 1: This patent clearly establishes the capsule-in-capsule structure as prior art. It teaches a (1) multi-compartment (2) hard-shell capsule for separating (3) different medicaments in (4) different physical states. Its focus on "medicaments" and general "formulations" means it does not specifically disclose the ingredient types required by claim 1, precluding a finding of anticipation.
- Claim 58: This patent does not disclose the specific vitamin/mineral combination and therefore does not anticipate claim 58.