Provisional Patent Application Drafting Provisional Patent Application Drafting: A Comprehensive Guide for Inventors

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Patents serve as crucial legal instruments to safeguard intellectual property rights for inventions. The patent registration process can be complex, lengthy, and often involve significant costs. For many inventors, drafting a provisional patent application (PPA) offers an efficient and practical solution.

A provisional patent application (PPA) is a procedure introduced by the United States Patent and Trademark Office (USPTO) on June 8, 1995. Currently, PPAs are only available in the US.

The primary purpose of PPAs is to provide a cost-effective and expedited option for those facing time and budgetary constraints. As such, this route is particularly recommended when the applicant lacks the time necessary to draft a full patent application and needs to disclose the invention promptly. Additionally, PPAs are suitable when the applicant’s financial resources are insufficient to cover the immediate costs of patent registration in the desired target countries. Furthermore, PPAs are beneficial when the invention concept is subject to potential minor modifications, but the applicant still desires to secure legal protection for the idea.

PPAs are not examined or published by the USPTO or any other entity. Instead, they establish a filing date and a serial number for the applicant. If the applicant chooses to file a full patent application within one year of submitting the PPA, the PPA’s filing date (retroactive) will serve as the patent’s priority date.

Conversely, if the applicant opts not to file a full patent application within the 12-month period, the PPA will be expunged from the USPTO’s records. The risk associated with this scenario is that if the applicant discloses the PPA details or the invention concept to a third party during this 12-month period, such disclosure could be considered prior publication and render the invention ineligible for patent protection (unless a full patent application is filed based on the PPA). Therefore, it is advisable to have any third party exposed to the PPA sign a confidentiality agreement.

Filing a provisional patent application in the United States offers several significant advantages for inventors:

Establishing Priority Date: The filing date of a provisional patent application serves as the official “priority date” for the invention. This date is crucial for determining intellectual property rights and establishing priority in case of disputes with other inventors.

Flexibility in Development: A provisional patent application does not require a detailed description of the invention or defined claims. This allows inventors to continue developing the invention with greater flexibility, making changes and refinements as needed.

Low Cost: Filing fees for a provisional patent application in the United States are significantly lower than for a full patent application.

Temporary Protection: A provisional patent application provides inventors with temporary protection for their invention for 12 months. This period allows them to further develop the invention and secure funding before filing a full patent application.

This article aims to provide a comprehensive overview of drafting a provisional patent application in the United States. Throughout the article, we will discuss the formal requirements for filing an application, the recommended structure, and effective tips for submitting a successful application.

Formal Requirements for Filing a Provisional Patent Application in the United States

Filing a provisional patent application in the United States entails meeting several formal requirements. Here’s a breakdown of the key requirements:

 1. Applicant Information:

Full Name: Provide the full name(s) of the inventor(s).

Address: Provide the applicant’s residential or business address.

Contact Information: Provide a phone number and email address for the applicant.

 2. Title of the Invention:

The title of the invention should be a concise and clear description of the invention. The title should be concise and accurate, using relevant technical terms. It is recommended that the title not exceed 50 characters.

 3. Description of the Invention:

The description of the invention should be a general overview of the invention, using relevant technical terms. The description should be clear, concise, and easy to understand. It is recommended to include in the description the technological background of the invention, the problem it solves, the proposed solution, and the benefits of the invention.

An invention description plays a crucial role in a provisional patent application, providing a clear and concise overview of the invention and its key features. A well-crafted description can enhance the understanding of the invention by the USPTO examiner and strengthen your patent claim. Here are some effective tips for drafting an impactful invention description:

Introduction: Start with a brief introduction that defines the invention and its purpose. Briefly explain the problem the invention addresses and the need for it. Highlight the main advantages of the invention.

Focus on Relevant Technical Terms: Use accurate and clearly defined technical terms throughout the description. Avoid using complex legal jargon or unclear technical concepts. Ensure consistency in technical terminology across the entire application.

Explain the Invention’s Operation: Clearly describe how the invention functions and its primary components. Utilize drawings and illustrations, if necessary, to visualize the operation. Explain how each component contributes to the invention’s functionality.

Emphasize Unique Aspects: Identify the key distinctions between your invention and existing solutions. Explain how your invention offers a significant advantage or solves a problem more effectively. Focus on the technological innovations and unique aspects of the invention.

Use Clear and Concise Language: Craft the invention description in clear, concise, and easy-to-understand language. Use short, easy-to-read sentences. Avoid using complex or unnecessary language.

Proofread and Edit Thoroughly: Once you’ve completed the invention description, carefully proofread it. Ensure the description is clear, concise, and accurate. Make edits as needed. Ask someone else to read the invention description and confirm its clarity.

Additional Tips: Tailor the description to the specific technical field of the invention. Use appropriate headings and subheadings to organize the description. Include specific examples to illustrate the invention’s operation and benefits. Consider seeking guidance from a registered patent attorney for assistance in drafting a compelling invention description.

By following these guidelines and crafting a clear, informative invention description, you can effectively convey the essence of your invention to the USPTO, enhancing your chances of securing patent protection for your innovative creation.

 3. Drawings for Provisional Patent Applications (not mandatory)

In addition to a comprehensive written description, provisional patent applications can also include drawings or illustrations to enhance the understanding of the invention. Clear, accurate, and well-structured drawings can effectively complement the textual description and strengthen your patent claim. Here are some essential tips for creating effective drawings for provisional patent applications:

Utilize Appropriate Software: Employ professional graphic design software to generate high-quality drawings. These programs offer a range of drawing tools and allow for precise adjustments, ensuring the clarity and accuracy of your illustrations. Ensure the software you choose is compatible with the file formats accepted by the United States Patent and Trademark Office (USPTO).

Prioritize Accuracy and Clarity: Strive for utmost accuracy and clarity in your drawings. Use sharp lines, well-defined shapes, and consistent colors. Ensure the drawings are easy to interpret and understand, avoiding any ambiguity or confusion.

Align Drawings with Description: Maintain consistency between your drawings and the textual description of the invention. Reference each component and function mentioned in the description to the corresponding element in the drawings. Utilize numbers or letters to clearly identify different components.

Include Invention Name and Application Number: Label each drawing with the invention’s title and application number. This information will help identify the drawings and associate them with the appropriate patent application.

Utilize Titles and Captions: Incorporate concise titles and captions to further clarify the purpose and function of each drawing. Keep the explanations brief and easy to read. Avoid adding excessive or overly detailed information directly on the drawings themselves.

Ensure Printability: Design the drawings to be easily printable on standard-sized paper. Verify that the font and text remain legible and clear after printing. You may need to adjust the size of the drawings or employ specialized printing techniques to achieve optimal results.

By following these guidelines and creating well-crafted drawings, you can effectively complement your provisional patent application, enhancing the USPTO examiner’s understanding of your invention and strengthening your chances of securing patent protection. Remember, clear and informative drawings serve as valuable tools for effectively communicating the essence of your innovation.

4. Claims in Provisional Patent Applications (not mandatory)

While claims are not mandatory in provisional patent applications (PPAs), they can be beneficial for defining the scope of protection sought for the invention and providing a clearer understanding of the invention’s essence.

For an article on drafting patent claims, see this article

What are Claims?

Claims are the heart of a patent application, defining the specific aspects of the invention that the applicant seeks to protect under patent law. They serve as the legal boundaries of the patent, outlining what can and cannot be prevented from others making, using, or selling.

Why Include Claims in a PPA?

While not mandatory, including claims in a PPA offers several advantages:

  1. Establish a Clear Scope of Protection: Claims provide a clear definition of what the invention encompasses, helping the USPTO and potential licensees understand the invention’s protected aspects.

  2. Guide Patent Prosecution: Claims serve as a roadmap for patent prosecution, guiding the examiner’s assessment and potential amendments to the application.

  3. Enforceability: Well-drafted claims can enhance the enforceability of the patent, providing a stronger basis for legal action against infringement.

How to Draft Claims for a PPA

If you choose to include claims in your PPA, consider these guidelines:

  1. Clarity and Conciseness: Use clear, concise language that accurately reflects the invention’s features and limitations.

  2. Specificity: Define the invention with specificity, avoiding vague or overly broad language.

  3. Support from Description: Ensure the claims are supported by the description of the invention provided in the PPA.

  4. Consistency: Maintain consistency in terminology and scope across all claims.

  5. Independent and Dependent Claims: Include at least one independent claim, which stands alone, and dependent claims, which reference the independent claim and add additional limitations.

Additional Considerations

  • Seek Professional Guidance: Consulting with a registered patent attorney can be invaluable in drafting effective claims that align with your invention and patent strategy.

  • Prioritize Invention Definition: Focus on defining the core elements of the invention rather than drafting overly complex or restrictive claims.

  • Leave Room for Refinement: As the invention evolves, you can refine the claims in a subsequent full patent application.


Including well-drafted claims in your provisional patent application can provide a solid foundation for protecting your invention and guiding its development towards a full patent application. While not mandatory, claims can serve as valuable tools for establishing the scope of protection, enhancing enforceability, and streamlining the patent prosecution process.

5. Filing a Provisional Patent Application in the United States

Filing a provisional patent application in the United States can be an effective way to secure intellectual property rights for an invention. Here are some valuable tips for submitting a successful application:

1. Clearly Define Your Invention:

Before drafting the application, ensure you clearly and accurately define your invention. Understand the technical aspects of the invention and the problem it addresses. Identify the unique advantages of your invention and what sets it apart from existing solutions.

2. Use Clear and Concise Language:

Draft the application in clear, concise, and easy-to-understand language. Use accurate and well-defined technical terms. Avoid using complex legal jargon or unclear technical concepts.

3. Focus on the Essence of the Invention:

The invention description should focus on relevant technical terms while highlighting the unique aspects of your invention. Explain how your invention solves an existing problem or offers a significant advantage over other solutions. Clearly identify the key distinctions between your invention and existing solutions.

4. Utilize Drawings and Illustrations:

Drawings and illustrations can effectively visualize your invention. Use high-quality, clear drawings that depict the invention from different angles. Ensure the drawings align with the textual description of the invention.

5. Adhere to the Timeline:

Submit your provisional patent application within 12 months of self-disclosure of the invention. Don’t wait until the last minute to file, as you may need additional time for editing, revisions, or submission.

6. Use Standard Formats:

Employ standard formats for patent application submissions, such as Word or PDF. Ensure the application is well-organized and easy to read. Maintain consistency in formatting and terminology.

7. Review Local Requirements:

Verify that you meet all formal requirements for filing a provisional application in the United States. There may be specific requirements related to the technological field of your invention. Check the USPTO website for detailed information.


Filing a provisional patent application in the United States can be an effective step in securing intellectual property rights for an invention. However, it’s crucial to draft the application correctly, adhering to the formal requirements of the United States Patent and Trademark Office (USPTO).

This article has outlined the key requirements for filing a provisional application, focusing on the recommended structure, effective drafting tips, and guidelines for creating high-quality drawings.

Final Recommendations: Consult a Registered Patent Attorney: Seek guidance from a registered patent attorney before drafting your provisional patent application. A patent attorney can assist you in understanding the formal requirements, crafting a professional application, and establishing an intellectual property protection strategy tailored to your invention.

Remember, a well-prepared provisional patent application can effectively establish your invention, protect your intellectual property, and serve as a solid foundation for pursuing a full patent application. By following these recommendations and seeking appropriate guidance, you can enhance your prospects of securing patent protection for your innovative creation.

Additional Resources:

  • Book: Y. Drori, “Patent Law”, Praelstein Ginnosar Publishing, pp. 266-296 (2023) (Hebrew).
  • Book: Y. Drori, Y. Werzansky-Orland, “Intellectual Property Law in Israel”, Praelstein Ginnosar Publishing, pp. 13-119 (2019) (English)

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