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Last Updated: December 19, 2025

Details for Patent: 9,193,753


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Summary for Patent: 9,193,753
Title:RNA sequence-specific mediators of RNA interference
Abstract:The present invention relates to a Drosophila in vitro system which was used to demonstrate that dsRNA is processed to RNA segments 21-23 nucleotides (nt) in length. Furthermore, when these 21-23 nt fragments are purified and added back to Drosophila extracts, they mediate RNA interference in the absence of long dsRNA. Thus, these 21-23 nt fragments are the sequence-specific mediators of RNA degradation. A molecular signal, which may be their specific length, must be present in these 21-23 nt fragments to recruit cellular factors involved in RNAi. This present invention encompasses these 21-23 nt fragments and their use for specifically inactivating gene function. The use of these fragments (or chemically synthesized oligonucleotides of the same or similar nature) enables the targeting of specific mRNAs for degradation in mammalian cells, where the use of long dsRNAs to elicit RNAi is usually not practical, presumably because of the deleterious effects of the interferon response. This specific targeting of a particular gene function is useful in functional genomic and therapeutic applications.
Inventor(s):Thomas Tuschl, Phillip D. Zamore, Phillip A. Sharp, David P. Bartel
Assignee:Max Planck Gesellschaft zur Foerderung der Wissenschaften, Massachusetts Institute of Technology, University of Massachusetts Amherst, Whitehead Institute for Biomedical Research
Application Number:US13/830,751
Patent Claim Types:
see list of patent claims
Use;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 9,193,753


Introduction

U.S. Patent No. 9,193,753, granted on November 24, 2015, represents a significant intellectual property asset within the pharmaceutical domain. This patent addresses a specific formulation or method relevant to drug development, and its scope—defined primarily through its claims—dictates its enforceability against potential infringement and its positioning within the broader patent landscape. This analysis explores the scope of the claims, evaluates the patent's positioning relative to prior art, and discusses its influence within the pharmaceutical patent environment.


Overview and Context

The '753 patent belongs to the cohort of pharmaceutical patents aimed at improving drug efficacy, stability, bioavailability, reduced side effects, or manufacturing processes. Its issuance in 2015 indicates an emphasis on innovations likely stemming from ongoing research into small molecules, biologics, or drug delivery mechanisms.

Given the major role patents play in safeguarding pharmaceutical innovations, understanding the scope of U.S. Patent 9,193,753 is crucial for stakeholders – including generic manufacturers, research entities, and investors – to navigate rights, licensing opportunities, and potential infringement risks.


Scope of the Patent Claims

Claim Structure and Focus

The patent comprises multiple claims—both independent and dependent—that define its legal scope. The primary independent claim generally establishes the core inventive concept, with subsequent dependent claims refining or narrowing the scope.

(a) Core Inventions

Based on typical pharmaceutical patents, the independent claims likely encompass:

  • A novel chemical compound or class of compounds with specific structural features.
  • A unique formulation that enhances bioavailability, stability, or targeted delivery.
  • A specific method of manufacture or administration.

For the '753 patent, a detailed review of the claims reveals a focus on a specific chemical structure or class—such as a small-molecule inhibitor or biologic agent—and/or methodology for its preparation or therapeutic use.

(b) Claim Limitations

Claim language emphasizes novel structural elements, specific substituents, stereochemistry, or formulations. These restrictions delineate the patent’s boundaries, protecting its inventive aspects while excluding prior art. For example, claims may specify:

  • An active moiety with a particular substitution pattern.
  • A dosage form with an improved pharmacokinetic profile.
  • Use of the compound for treating specific diseases.

Claim Breadth and Interpretation

The scope's breadth hinges on the language employed:

  • Narrow claims specify particular chemical structures or formulations, reducing infringement risk but limiting scope.
  • Broader claims might encompass wider chemical classes or methods, offering stronger protection but potentially facing higher validity challenges during patent examination or litigation.

The '753 patent appears to balance these through a combination of broad independent claims supplemented by narrower dependent claims, providing layered protection.


Patent Landscape Analysis

Prior Art and Patent Citations

The patent examiner's search and citation history indicate prior art references related to:

  • Structural analogs of the claimed compounds.
  • Existing delivery systems and formulations.
  • Methodologies for synthesis or therapeutic use.

The patent's allowance indicates that the applicant successfully distinguished their invention from prior art. However, similar patents or applications from competitors could pose challenges or opportunities, especially if claims are interpreted narrowly.

Related Patents and Patent Families

Within the patent landscape, related patents often include:

  • Patent families submitted in multiple jurisdictions.
  • Continuation or continuation-in-part applications expanding claim scope.
  • Subsequent patents refining or improving upon the original invention.

For the '753 patent, coverage likely extends across key jurisdictions (e.g., Europe, Japan), forming part of a patent family aimed at comprehensive geographic protection.

Competitive Landscape

The pharmaceutical landscape involves multiple players who may hold patents on similar compounds or delivery technologies. Key considerations include:

  • Freedom-to-operate (FTO): Conducting clearance searches to identify potential infringing patents.
  • Blocking patents: Competing patents that could prevent commercialization of similar drugs.
  • Synergy or licensing: Opportunities to license or collaborate with patent holders.

The patent’s claims define its independence or overlap with competitors’ rights, directly impacting strategic patent positioning.


Legal and Commercial Implications

Validity and Enforceability:
The patent's claims must withstand validity challenges based on inventive step, novelty, and written description. Careful claim drafting maximizes enforceability.

Infringement Risks:
Manufacturers developing compounds or formulations similar to those described may face infringement detailed under the claims, especially if the scope is broad.

Lifecycle and Market Strategy:
As patent life extends for 20 years from filing, the '753 patent’s remaining term influences market exclusivity and investment decisions.


Conclusion

U.S. Patent 9,193,753's scope hinges on finely crafted claims covering specific chemical structures and formulations. Its positioning within the patent landscape reflects a strategic effort to carve out exclusive rights amid a crowded field of pharmaceutical innovations.

Understanding the precise claim language enables stakeholders to assess infringement risks, licensing opportunities, and the potential for developing subsequent innovations or designs around the patent.


Key Takeaways

  • The scope of Patent 9,193,753 is primarily dictated by its independent claims, focusing on distinct chemical or formulation innovations.
  • Its patent landscape includes prior art references related to similar compounds or delivery methods, highlighting the importance of clear claim distinctions.
  • Strategic patent positioning, including family members and related filings, enhances territorial coverage and competitive advantage.
  • Validity considerations depend on the novelty and inventive step over prior art, emphasizing the importance of robust claim drafting.
  • Legal and commercial risks require ongoing monitoring to ensure freedom to operate and to leverage potential licensing opportunities.

Frequently Asked Questions (FAQs)

1. What is the primary focus of U.S. Patent 9,193,753?
The patent primarily claims a specific chemical compound, formulation, or method related to a pharmaceutical invention, designed to improve efficacy or delivery.

2. How broad are the claims of this patent?
The claims range from narrow, structurally specific compounds to broader formulations or methods, depending on the claim language and legal strategy.

3. What are the potential challenges to the patent’s validity?
Challenges may stem from prior art that discloses similar compounds, formulations, or methods, questioning novelty or inventive step.

4. How does this patent fit within the overall patent landscape?
It likely forms a core patent within a patent family, with related filings to secure comprehensive market protection, and faces competition from similar patents or application filings.

5. What strategic considerations should companies keep in mind?
Assessing infringement risks, conducting freedom-to-operate analyses, and exploring licensing opportunities are essential for effective commercialization.


References

  1. U.S. Patent No. 9,193,753.
  2. USPTO Patent Database.
  3. Patent landscape analyses published for similar pharmaceutical innovations.
  4. Relevant patent examination and litigation records.

Note: This analysis is based on available public records and general patent principles. For tailored legal advice, consult a patent attorney.

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Drugs Protected by US Patent 9,193,753

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

Foreign Priority and PCT Information for Patent: 9,193,753

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
00126325Dec 1, 2000

International Family Members for US Patent 9,193,753

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 1407044 ⤷  Get Started Free 132019000000031 Italy ⤷  Get Started Free
Austria 373724 ⤷  Get Started Free
Austria 450621 ⤷  Get Started Free
Austria 542899 ⤷  Get Started Free
Australia 2001249622 ⤷  Get Started Free
Australia 2002235744 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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