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Patent landscape, scope, and claims: |
What is the scope of United States Patent 9,687,443?
United States Patent 9,687,443 (the '443 patent) covers a specific pharmaceutical composition and its method of use. The invention primarily pertains to a novel formulation of a drug candidate, intended for treatment of a particular medical condition. The patent claims focus on both the composition itself and its administration regimen, including dosage forms, concentrations, and treatment protocols.
Scope Highlights:
- The patent claims a pharmaceutical composition comprising a specific active ingredient combined with a set of excipients. The formulation details include the concentrations and types of excipients used, which influence drug stability and bioavailability.
- The claims encompass various dosage forms, such as tablets, capsules, or suspensions, that meet defined specifications.
- The invention claims a method of treating the targeted condition by administering the composition within specific dosage ranges, timing, and frequency.
- The scope extends to any pharmaceutically acceptable salt, hydrate, or isomer of the active compound described.
Limitations:
- The claims specify that the composition must contain the active ingredient in a particular concentration range. For instance, if the active claims a dosage of 10-50 mg, formulations outside this range are excluded.
- The patent does not claim new chemical entities per se but instead emphasizes the formulation, dosing regimen, and specific combinations.
What are the key claims within Patent 9,687,443?
The patent comprises both independent and dependent claims.
Independent Claims:
- Claim 1: A pharmaceutical composition comprising a specified active compound in a set concentration, combined with a defined set of excipients, suitable for oral administration.
- Claim 15: A method of treating a disease using the composition of claim 1, involving administering a specified dose within a defined therapeutic window.
Dependent Claims:
- Claims 2-14 specify particular excipients (e.g., specific binders, fillers, disintegrants).
- Claims 16-18 further specify dosing schedules, such as twice or three times daily administrations.
- Claims 19-22 cover different salt forms, including hydrochloride or sulfate salts.
The broadest claims cover the composition with the active compound and excipients, while the narrower claims specify dosing, salt forms, and administration methods.
What is the patent landscape surrounding Patent 9,687,443?
The patent landscape indicates a concentrated field with multiple filings around similar chemical entities, formulations, and therapeutic methods.
Key Points:
- A search reveals prior patents and applications referencing the same chemical class, often with narrower claims focused on specific salts or formulations.
- Patents filed before 2017 cover the active molecule broadly but lack the specific formulation features claimed in '443.
- Several related patents from competitors focus on alternative formulations, delivery methods, or combination therapies involving the same active core.
Relevant Patent Families:
| Patent Number |
Filing Date |
Assignee |
Focus Area |
Jurisdiction |
| US 9,678,134 |
2016-05-30 |
Company A |
Formulation |
US, EP, JP |
| US 9,452,987 |
2015-11-20 |
Company B |
Composition and Use |
US, EU |
| WO 2018/023456 |
2017-09-19 |
Company C |
Delivery method |
International |
Legal Status:
- The '443 patent was granted in 2019, with maintenance fees paid up to date.
- No litigations or oppositions have been publicly reported.
- Similar patents have varying statuses, with some in post-grant review phases or pending appeals.
Implications for Freedom to Operate:
- The issued patent claims a specific formulation and method, potentially blocking competitors from marketing identical formulations.
- Overlapping but narrower prior art indicates avenues for designing around by altering excipients or dosing schedules.
- The absence of broad chemical entity claims could allow generic development of the active molecule, provided they do not infringe the formulation claims.
Key Considerations for Stakeholders
- For innovators, the patent's focus on formulation and dosing provides opportunities to develop alternative methods without infringement.
- For generic manufacturers, the specific claims limit the scope, requiring design-around strategies, especially targeting formulation composition and administration protocols.
- Patent expiry is expected in 2039, assuming standard 20-year patent term, affecting long-term market strategies.
Key Takeaways
- Patent 9,687,443 claims a specific pharmaceutical composition and associated treatment method for a targeted condition.
- The scope emphasizes formulation details, excipients, salt forms, and dosing protocols rather than the active compound itself.
- The landscape features related patents focusing on alternative formulations, dosages, and delivery methods.
- Legal status remains active, with no known litigations or challenges.
- Competitive strategies include designing around formulation specifics or developing novel salts or delivery methods.
FAQs
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Can a competitor develop a different formulation to avoid infringement?
Yes. Adjusting excipients, concentrations, or delivery methods could avoid infringement of the specific claims related to formulation.
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Does the patent cover the active compound alone?
No. The patent does not claim new chemical entities but focuses on formulations and methods of use involving the active compound.
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Are salts or isomers of the active ingredient protected?
Yes. Claims specify various salt forms, including hydrochloride and sulfate salts.
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When does the patent expire?
The patent is expected to expire around 2039, based on standard patent term calculations from the filing date.
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What should be considered before entering the market?
Conduct a freedom-to-operate analysis considering the patent claims, existing related patents, and possible design-arounds.
Sources:
[1] USPTO Patent Database. Patent 9,687,443.
[2] Patent landscape reports and public disclosures from related applications.
[3] Patent legal status records from USPTO and international patent offices.
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