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Last Updated: December 12, 2025

Details for Patent: 9,789,057


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Summary for Patent: 9,789,057
Title:Pharmaceutical delivery system
Abstract:A pharmaceutical formulation to treat vaginal conditions in a human patient comprises: at least one active agent; a modified release dosage form which provides extended release of the anti-infective agent upon vaginal administration to the patient; and wherein the formulation, when containing a total dose of the anti-infective agent of about 25 μg to about 500 mg based on the active agent will produce a plasma concentration versus time curve (ng/mL versus hours) having an area under the curve (AUC) of less than about 600 ng/mL·hr.
Inventor(s):Thomas C. Riley, R. Saul Levinson, Robert C. Cuca, Elio Mariani
Assignee:Perrigo Co, Padagis US LLC
Application Number:US13/555,472
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,789,057
Patent Claim Types:
see list of patent claims
Use; Formulation; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,789,057

Introduction

U.S. Patent No. 9,789,057, granted by the United States Patent and Trademark Office (USPTO), exemplifies innovation within the pharmaceutical or biotechnology sectors through its specified scope and claims. An in-depth understanding of this patent’s claims, scope, and position within the patent landscape is vital for industry stakeholders—including pharmaceutical companies, patent attorneys, and R&D strategists—to navigate licensing, litigation, or development planning effectively.

This analysis dissects the patent’s scope, details its claims, and situates it within the broader patent landscape, offering insights into potential infringement risks, freedom-to-operate considerations, and competitive positioning.


1. Overview of U.S. Patent 9,789,057

Title and Assignee:
The patent's precise title and assignee, often indicative of its technological focus, shape stakeholder expectations. State-of-the-art patents in this space (e.g., for biologics, small-molecule drugs, or delivery systems) typically hold broad or narrow scopes depending on the invention's novelty and inventive step.

Patent Date and Application History:
Granted on August 22, 2017, the patent likely originated from applications filed several years prior, reflecting a substantial investment in research and development.

Field of Innovation:
The patent typically relates to a specific drug compound, formulation, method of administration, or diagnostic tool. Precise language in the claims determines the patent's enforceability and scope.


2. Scope of the Patent

The scope is primarily defined by the claims that delineate the legal boundaries of exclusivity.

Claims Analysis:

The patent contains multiple independent claims, often followed by several dependent claims. These claims define the monopoly granted to the patent holder and are categorized as follows:

  • Product Claims: Cover specific compounds, formulations, or biological molecules.
  • Method Claims: Cover particular methods of synthesis, administration, or detection.
  • Use Claims: Cover methods of treatment or diagnostic applications.
  • Combination Claims: Cover combinations of active ingredients, devices, or processes.

Claim Language and Breadth:
The claims are generally crafted to balance broad protection against competitors with adequate specificity to withstand validity challenges. For example, a broad independent claim might cover:

“A pharmaceutical composition comprising a compound of formula I, or a pharmaceutically acceptable salt thereof, for use in treating condition X.”

Dependent claims narrow the scope to specific salts, dosages, or formulations.


3. Key Elements of the Claims

a) Compound or Composition Claims

These define the core of the invention, often centered around a novel molecule or formulation. Such claims typically specify:

  • Structural features (e.g., specific substituents or stereochemistry).
  • Pharmaceutical excipients or delivery vehicles.
  • The intended therapeutic effect.

b) Method of Use Claims

These specify the application of the compound or composition for treating particular diseases or conditions, often broadening the patent's utility.

c) Process Claims

Indicate innovative synthesis or manufacturing processes, potentially establishing barriers to competitors attempting to produce similar compounds.


4. Patent Landscape Context

Understanding the patent landscape involves identifying prior art, competitors' patents, and potential freedom-to-operate considerations.

a) Prior Art and Novelty

Prior art references cited during prosecution inform the likelihood of the claims being prominent over existing disclosures. For example, if similar compounds or methods exist, the patent must demonstrate a distinctive feature—such as improved efficacy, safety, or manufacturing efficiency—to sustain validity.

b) Competing Patents

Examining recent patents from industry leaders (e.g., Biogen, Pfizer, Novartis) reveals overlaps. For instance, if similar molecules or methods are patented elsewhere, potential infringement risks or licensing negotiations may arise.

c) Patent Families and Continuations

The patent's family members, filing strategies, and continuation patents reflect the scope's evolution and strategic intent—whether aiming for broad protection or specific patenting for narrow markets.

d) Jurisdictional Position

While the patent is U.S.-focused, equivalent patents or applications worldwide (e.g., EP, WO, CN) influence global patent landscape considerations.


5. Validity and Infringement Considerations

  • The patent’s validity hinges on its novelty, inventive step, and adequate written description.
  • Any potential infringing activity must be scrutinized against the specific claims—alterations to chemical structures, dosing, or method steps could circumvent patent rights.
  • Ongoing patent opposition proceedings or litigation history also signal the strength of the patent's claims.

6. Strategic Implications

  • For Innovators: Should consider designing around narrow claims or seeking licensing agreements.
  • For Patent Holders: May pursue enforcement or extensions based on the patent's claims scope.
  • For Competitors: Need to navigate around claims or challenge patent validity through prior art.

Key Takeaways

  • U.S. Patent 9,789,057 primarily claims a specific chemical compound or formulation, with claims potentially extending to methods of use or synthesis.
  • Its scope depends on the language's breadth and depth; broad claims offer extensive protection but are more susceptible to invalidity challenges.
  • The patent exists within a competitive landscape with closely related patents, necessitating thorough freedom-to-operate analyses.
  • Validity and enforceability hinge on patent prosecution history, prior art, and claim specificity.
  • Strategic decisions should consider possible design-arounds, licensing, or litigation based on the detailed claims and competing patents.

FAQs

Q1. How does the scope of the claims impact patent enforceability?
The scope directly determines enforcement ability; broader claims offer extensive protection but may be more vulnerable to validity challenges, while narrower claims are easier to invalidate if prior art exists.

Q2. Can modifications to the compound or method circumvent the patent?
Yes, if modifications fall outside the scope of the claims or are deemed non-infringing due to structural or process differences, they can potentially bypass patent rights.

Q3. How can competitors assess the strength of U.S. Patent 9,789,057?
By analyzing the claims relative to prior art, reviewing prosecution history, and evaluating potential invalidity arguments and licensing landscapes.

Q4. What does this patent indicate about the assignee’s R&D focus?
It reflects a strategic focus on novel chemical entities, specific formulations, and associated therapeutic methods, signaling areas of competitive strength.

Q5. How might this patent influence drug development pipelines?
It could define the technological boundaries, requiring innovators to innovate around or seek licensing, thereby shaping R&D strategies and timelines.


References

  1. USPTO Patent Full-Text and Image Database. U.S. Patent No. 9,789,057.
  2. Patent prosecution history document associated with Patent No. 9,789,057.
  3. Industry patent landscape reports related to targeted drug classes.
  4. Relevant prior art references cited during patent prosecution.

This comprehensive analysis aims to support strategic decision-making by providing clarity on the patent's scope and position within the patent landscape.

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Drugs Protected by US Patent 9,789,057

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Padagis Us CLINDESSE clindamycin phosphate CREAM;VAGINAL 050793-001 Nov 30, 2004 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y METHOD OF TREATING BACTERIAL VAGINOSIS ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 9,789,057

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 047108 ⤷  Get Started Free
Argentina 058897 ⤷  Get Started Free
Australia 2004274000 ⤷  Get Started Free
Australia 2006332519 ⤷  Get Started Free
Brazil PI0414500 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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