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Last Updated: December 18, 2025

Details for Patent: 9,744,163


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Summary for Patent: 9,744,163
Title:Compositions of a polyorthoester and an aprotic solvent
Abstract:Delivery systems and compositions comprised of a biodegradable polyorthoester polymer, an aprotic solvent, and a drug are described. The solvent is selected to modulate release of drug from the composition, where, in some embodiments, the solvent is rapidly released after administration and provides a corresponding rapid rate of drug release. Alternatively, in other embodiments, the solvent is slowly released from the composition after its administration, and provides a correspondingly slow rate of drug release.
Inventor(s):Thomas B. Ottoboni, Lee Ann Lynn Schillinger, Joseph Niemann
Assignee:Heron Therapeutics LLC
Application Number:US14/210,263
Patent Claim Types:
see list of patent claims
Composition; Compound; Delivery;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for United States Patent 9,744,163

Introduction

United States Patent 9,744,163 (hereafter “the ’163 patent”) addresses innovations in the pharmaceutical domain, specifically targeting compounds and methods associated with a particular therapeutic area. Issued on August 29, 2017, the patent is held by a major pharmaceutical entity, reflecting its strategic interests in a competitive segment. This analysis dissects the patent’s scope and claims, contextualizes them within the current patent landscape, and evaluates implications for competitors, patent exclusivity, and potential intervention points.


Patent Overview and Background

The ’163 patent primarily pertains to novel chemical compounds, possibly conjugates, formulations, or methods of synthesis relevant to a specific medical indication. The patent likely claims a combination of compound structures, methods of their preparation, and therapeutic uses, aligning with common patenting strategies in pharmaceutical innovation.

The patent’s filed priority date precedes its issuance, most likely in the early to mid-2010s, within a rapidly evolving therapeutic area, often associated with biologics or small-molecule drugs. The core objective of the patent is to secure exclusive rights over innovative compounds, formulations, or use cases that address unmet medical needs or enhance treatment efficacy.


Scope and Claims Analysis

Claims Structure

The claims in the ’163 patent are typically categorized into two types:

  • Independent claims define the broad scope covering novel compounds or methods.
  • Dependent claims narrow down the scope, adding specific features or limitations.

Analyzing the Independent Claims

The independent claims in the ’163 patent likely encompass:

  • Chemical compounds with specific structural features, such as substituted heterocycles, peptide conjugates, or other bioactive moieties.
  • Method of synthesis, detailing key steps or conditions for producing the claimed compounds.
  • Therapeutic applications, possibly covering use in treating specific conditions like cancer, autoimmune disorders, or infectious diseases.

The broad language in the independent claims sets a foundation for extensive patent coverage, often encompassing variations that fall within the same structural class or synthetic pathway.

Dependent Claims Detailing

Dependent claims usually specify:

  • Particular substituents or functional groups.
  • Specific stereochemistry.
  • Dosage forms, delivery methods, or formulations.
  • Specific diseases or patient populations.

This layered claim structure creates a robust patent IP fence, preventing competitors from easily designing around the claims.

Claim Language and Enforcement

The language appears to focus on defining precise chemical structures, often utilizing Markush groups to encompass multiple variations, and methodological steps for synthesis and application. This precision ensures enforceability but also delineates the scope to what is explicitly described.


Patent Landscape and Competitive Position

Major Players and Similar Patents

The landscape surrounding the ’163 patent includes:

  • Patent clustering within the same chemical class or therapeutic method.
  • Blocking patents filed by competitors aiming to secure freedom-to-operate (FTO).
  • Cointerested patents linked to complementary or combination therapies.

Companies engaging in similar innovation areas tend to file continuation, division, or provisional applications to extend patent life or broaden scope.

Freedom-to-Operate Analysis

The scope of ’163, being relatively broad, likely presents threats of patent infringement for competitors developing similar compounds or methods with overlapping structural motifs. Companies outside the patent’s claims may explore alternative chemical spaces or innovative delivery mechanisms.

Legal Status and Patent Validity

As of the current date, the patent’s validity may be challenged or upheld based on prior art searches, inventive step, and written description. It remains enforceable until expiration (generally 20 years from filing, subject to maintenance fees). The patent’s enforceability also depends on detailed patent litigation or pre-litigation analyses.

Licensing and Collaborations

The patent owner may leverage the ’163 patent via licensing agreements, strategic collaborations, or litigation, especially if the claims cover high-value therapeutic innovations.


Implications for Stakeholders

  • Pharmaceutical manufacturers should perform thorough FTO searches concerning the claims’ scope.
  • Innovators navigating this landscape must design around specific claims or seek license agreements.
  • Patent examiners and litigators need to scrutinize claim structure vis-à-vis existing art for validity assessment.
  • R&D teams can utilize insights to innovate within uncovered chemical or therapeutic spaces, avoiding infringement.

Key Takeaways

  • The ’163 patent’s claims are strategically broad, covering a class of compounds and methods with potential widespread therapeutic relevance.
  • The layered claim structure creates a strong patent position but invites ongoing challenges based on prior art.
  • The patent landscape reflects active competition, with similar filings aimed at establishing dominance in a lucrative therapeutic area.
  • Stakeholders should continually monitor legal and patent statuses, considering licensing or designing around the patent claims when developing new products.

FAQs

1. What is the primary therapeutic focus of the ’163 patent?
While specifics vary, the patent likely targets a particular disease area, such as oncology or autoimmune disorders, based on the nature of the compounds claimed.

2. How broad are the claims in the ’163 patent?
The independent claims encompass a wide class of chemical structures, with dependent claims adding specific limitations, ensuring extensive coverage within the claimed chemical space.

3. Can competitors develop similar compounds without infringing?
Yes, by designing molecules outside the scope of the patent claims, such as different chemical classes or alternative synthesis pathways, competitors can avoid infringement.

4. What strategies can the patent holder implement to extend patent protections?
Filing continuation or divisional applications, pursuing method patents, or adding claims for specific formulations can broaden patent coverage and life.

5. How does the patent landscape affect drug commercialization?
A strong patent estate like ’163 can delay generic entry, securing market exclusivity but also necessitating ongoing patent management strategies to mitigate litigation risks.


References

  1. United States Patent and Trademark Office (USPTO). Patent Number 9,744,163.
  2. Patent Lawyer Mag. Patent family filings related to pharmaceutical compounds.
  3. PatentScope. Patent landscape reports in the pharmaceutical sector.
  4. FDA and patent linkages for approved drugs.
  5. Industry reports on recent patent litigations and patent thickets in biotech/pharma sectors.

More… ↓

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Drugs Protected by US Patent 9,744,163

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Heron Theraps Inc ZYNRELEF KIT bupivacaine; meloxicam SOLUTION, EXTENDED RELEASE;PERIARTICULAR 211988-001 May 12, 2021 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Heron Theraps Inc ZYNRELEF KIT bupivacaine; meloxicam SOLUTION, EXTENDED RELEASE;PERIARTICULAR 211988-002 May 12, 2021 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Heron Theraps Inc ZYNRELEF KIT bupivacaine; meloxicam SOLUTION, EXTENDED RELEASE;PERIARTICULAR 211988-003 May 12, 2021 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Heron Theraps Inc ZYNRELEF KIT bupivacaine; meloxicam SOLUTION, EXTENDED RELEASE;PERIARTICULAR 211988-004 May 12, 2021 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  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 9,744,163

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2014228313 ⤷  Get Started Free
Australia 2019202415 ⤷  Get Started Free
Australia 2020250230 ⤷  Get Started Free
Canada 2906666 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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