Detailed Analysis of the Scope and Claims of United States Patent 5,733,886
Introduction
United States Patent 5,733,886, titled "Compositions of clindamycin and benzoyl peroxide for acne treatment," is a significant patent in the field of dermatology, particularly for the treatment of acne. Here, we will delve into the scope, claims, and the broader patent landscape surrounding this invention.
Background of the Invention
The patent, filed on February 18, 1992, and granted on March 31, 1998, pertains to compositions and methods for treating acne using a combination of clindamycin and benzoyl peroxide. Acne is a common skin disorder characterized by various lesions, including blackheads, whiteheads, papules, pustules, and cysts, often associated with bacterial infections such as those caused by Propionibacterium acnes[4].
Scope of the Invention
The scope of this patent is focused on topical compositions that combine clindamycin, an antibiotic, and benzoyl peroxide, an oxidizing agent, to treat acne. The invention is designed to improve upon existing treatments by providing a more effective and stable formulation.
Key Components
- Clindamycin: An antibiotic effective against Propionibacterium acnes.
- Benzoyl Peroxide: An oxidizing agent that helps to reduce the bacterial load and prevent clogged pores[4].
Claims of the Patent
The patent includes several claims that define the scope of the invention:
Independent Claims
- Claim 1: A composition for the treatment of acne, comprising a combination of clindamycin and benzoyl peroxide in a pharmaceutically acceptable vehicle.
- Claim 2: The composition of claim 1, where the clindamycin is present in a concentration range of about 0.1% to about 5% by weight.
- Claim 3: The composition of claim 1, where the benzoyl peroxide is present in a concentration range of about 2% to about 10% by weight[4].
Dependent Claims
These claims further specify the composition, such as the type of vehicle used (e.g., gel, solution), the pH range, and the stability of the formulation.
Patent Landscape Analysis
Defining the Scope and Keywords
To conduct a patent landscape analysis around this patent, one would start by defining the scope of the analysis and identifying relevant keywords. Key terms might include "acne treatment," "clindamycin," "benzoyl peroxide," "topical composition," and "dermatological formulations"[3].
Search and Organize Patents
Using databases such as the USPTO's Patent Public Search, Google Patents, or international databases like the European Patent Office's esp@cenet, one can search for patents related to these keywords. Patents would be organized based on factors like filing date, assignee, and technology subcategories[1][3].
Identify Trends and Key Players
The analysis would reveal trends in patent filings, such as the increasing use of combination therapies for acne treatment. Key players in this field would include pharmaceutical companies and research institutions that have filed numerous patents related to acne treatments.
Analyze Citations and Evolution
Studying how patents reference each other helps in understanding the impact and development of the technology. For example, U.S. Patent 5,733,886 references earlier patents that combine erythromycin and benzoyl peroxide, indicating an evolution in the use of antibiotics and oxidizing agents for acne treatment[4].
Generate Insights for Decisions
The analysis provides practical guidance for strategic decisions, such as evaluating the competitive landscape, identifying potential legal vulnerabilities, and predicting technological trends. It helps in understanding the strength of patent portfolios and the potential for new innovations in acne treatment.
Competitive Landscape
Existing Patents
Other patents in this domain include those that combine erythromycin and benzoyl peroxide, such as U.S. Pat. No. 4,497,794. These patents highlight the ongoing innovation in acne treatment and the competition in developing effective and stable formulations[4].
Market Developments
Market developments such as mergers and acquisitions, in/out-licensing agreements, and litigation activities can be identified through patent landscape analysis. These insights are crucial for companies looking to navigate the complex landscape of dermatological treatments[5].
Legal Status and Expiry Dates
The legal status of U.S. Patent 5,733,886 is currently expired, which means that the composition and method described in the patent are no longer protected by patent law. This information is critical for companies considering the development of similar products, as they can now use the disclosed technology without infringing on the original patent[4].
Conclusion
U.S. Patent 5,733,886 represents a significant contribution to the field of acne treatment, offering a combination therapy that is both effective and stable. The patent landscape analysis around this invention provides valuable insights into the technological trends, key players, and competitive landscape in dermatological treatments.
Key Takeaways
- Combination Therapy: The patent highlights the efficacy of combining clindamycin and benzoyl peroxide for acne treatment.
- Patent Landscape: Analyzing the patent landscape helps in understanding the competitive environment and predicting future trends.
- Legal Status: The patent has expired, allowing for the use of the disclosed technology without infringement.
- Market Insights: The analysis provides critical insights into market developments and potential business opportunities.
Frequently Asked Questions (FAQs)
Q1: What is the main composition described in U.S. Patent 5,733,886?
A1: The main composition is a combination of clindamycin and benzoyl peroxide for the treatment of acne.
Q2: How does the patent landscape analysis help in understanding the competitive landscape?
A2: It helps by identifying trends in patent filings, key players, and market developments such as mergers and acquisitions, and litigation activities.
Q3: What is the current legal status of U.S. Patent 5,733,886?
A3: The patent has expired, meaning the disclosed technology is no longer protected by patent law.
Q4: What databases can be used to conduct a patent landscape analysis around this patent?
A4: Databases such as the USPTO's Patent Public Search, Google Patents, and international databases like the European Patent Office's esp@cenet can be used.
Q5: How does the analysis of citations and evolution help in understanding the impact of the patent?
A5: It helps by showing how the patent references earlier patents and how the technology has evolved over time, indicating the impact and development of the invention.
Cited Sources
- USPTO - Search for patents: https://www.uspto.gov/patents/search
- Accessdata.fda.gov: https://www.accessdata.fda.gov/drugsatfda_docs/nda/2008/050819s000_AdminCorres_P1.pdf
- Goldstein Patent Law: https://www.goldsteinpatentlaw.com/how-to-patent-landscape-analysis/
- Google Patents: https://patents.google.com/patent/US5733886A/en
- Sagacious Research: https://sagaciousresearch.com/blog/navigating-technological-domains-with-patent-landscape-analysis/
