You've spent months—maybe years—perfecting your invention. You've drafted detailed specifications, created precise drawings, and prepared your claims. But there's one more document that often gets overlooked: the patent application cover letter. This seemingly simple letter is your first formal communication with the patent examiner. It sets the tone for the entire examination process and can influence how your application is handled. A clear, professional cover letter demonstrates that you are organized, thorough, and respectful of the examiner's time. Conversely, a poorly written letter can create a negative first impression, cause confusion, or even lead to unnecessary office actions. This guide provides a step-by-step approach, practical templates, and expert advice to help you write a compelling business patent application cover letter that gets your application off to the best possible start.
Why a Patent Cover Letter Matters for Your Application
Your patent application cover letter is more than just a formality. It serves several critical functions. First, it introduces your application to the USPTO examiner and provides a summary of the invention, helping the examiner understand the scope and significance quickly. Second, it can highlight any specific issues or prior art you want to bring to the examiner's attention. Third, it confirms the filing details—such as the application type, the number of claims, and any associated fees. Fourth, it demonstrates your professionalism and can build a positive rapport with the examiner. A well-crafted cover letter can streamline the examination process by anticipating questions and providing clear, concise information upfront.
Common Mistakes That Weaken Your Patent Cover Letter
Even a solid application can be undermined by a poorly drafted cover letter. Avoid these common pitfalls to ensure your letter is effective and professional.
- Being too vague about the invention: "This is a patent application for a new device" is not helpful. Provide a clear, concise summary of the invention and its key advantages.
- Failing to include necessary information: Your cover letter should confirm the type of application (provisional, non-provisional, utility, design, etc.), the title, the number of claims, and any associated fees. Omitting these details can cause delays.
- Using overly technical language: While the examiner is a technical expert, your cover letter should be accessible. Avoid excessive jargon and focus on a clear, high-level description of the invention.
- Not referencing prior art: If you are aware of relevant prior art, it's helpful to mention it and explain how your invention differs. This can show the examiner that you have done your homework.
- Forgetting to include contact information: Ensure your letter includes your full name, address, phone number, and email address for any correspondence.
What to Include in Your Patent Cover Letter – A Checklist
To ensure your cover letter is comprehensive and meets all USPTO requirements, use this checklist. This structured approach will help you cover all the essential elements without missing anything critical.
- ☐ Application Type: Clearly state whether it's a provisional, non-provisional, utility, design, or plant patent application.
- ☐ Title of Invention: Provide the exact title as it appears in the specification.
- ☐ Inventor and Applicant Information: List all inventors and applicants, with their full names, addresses, and citizenship.
- ☐ Filing Fees: Confirm that the correct filing fees are included or that a fee authorization is provided.
- ☐ Number of Claims: State the total number of claims and whether any are independent or dependent.
- ☐ Prior Art Statement: Briefly mention any known prior art and explain how your invention improves upon it.
- ☐ Declaration or Oath: Confirm that an inventor's declaration or oath is included.
- ☐ Drawings: Verify that any required drawings are submitted and comply with USPTO rules.
- ☐ Power of Attorney: If you have appointed a patent attorney or agent, include the Power of Attorney document.
- ☐ Contact Information: Include your full contact details for correspondence.
Professional Patent Cover Letter Templates
Below are three distinct email templates—each tailored for a different type of patent application or situation. Customize these with your specific details.
Template 1: Standard Non-Provisional Utility Patent Application
This template is suitable for a standard utility patent application.
Subject Line Options:
- Patent Application – [Title of Invention] – [Application Number]
- Submission of Utility Patent Application – [Title]
- Utility Patent Application – [Title] – [Inventor Name]
Dear Patent Examiner,
Please find enclosed the non-provisional utility patent application for the invention entitled "[Title of Invention]." This application is being submitted by the undersigned on behalf of the inventor(s), [Inventor Full Name(s)].
**Application Details:**
- **Application Type:** Non-provisional Utility Patent Application
- **Title:** [Title of Invention]
- **Inventor(s):** [Full Name(s)]
- **Number of Claims:** [Number]
- **Filing Fee:** [Amount] (fee payment attached / fee authorization provided)
- **Declaration:** An inventor's declaration is included as required by 37 CFR 1.63.
**Summary of the Invention:**
The present invention relates to [brief description of the technical field]. It addresses the problem of [problem solved] by providing [key advantages]. The invention offers a novel and non-obvious solution to [problem], and we believe it is a significant advancement in the field.
**Prior Art Statement:**
To the best of our knowledge, the following prior art references are known: [list references, if any]. The present invention distinguishes from the prior art by [briefly describe the differentiating features].
**Drawings:** Drawings are included as required by 37 CFR 1.81 and 1.83.
We request that this application be examined in accordance with the applicable statutes and regulations. Should you have any questions or require additional information, please contact the undersigned at [Your Phone Number] or [Your Email Address].
Thank you for your consideration of this application.
Sincerely,
[Your Full Name]
[Your Title]
[Your Company/Organization]
[Your Address]
[Your Phone Number]
[Your Email Address]Template 2: Provisional Patent Application Cover Letter
Use this template when filing a provisional patent application.
Subject Line Options:
- Provisional Patent Application – [Title] – [Inventor]
- Provisional Filing – [Title of Invention]
- Submission of Provisional Patent Application – [Title]
Dear Patent Examiner,
This letter serves as a cover letter for the provisional patent application filed on behalf of the inventor(s) named below, for the invention entitled "[Title of Invention]."
**Application Details:**
- **Application Type:** Provisional Patent Application
- **Title:** [Title of Invention]
- **Inventor(s):** [Full Name(s)]
- **Filing Fee:** [Amount] (fee payment attached)
- **Application Number:** [If known, otherwise leave blank]
**Summary of the Invention:**
The present invention relates to [brief description of the field and problem]. The provisional application describes the novel features of the invention, including [key features]. This provisional application establishes an early effective filing date for the invention.
**Drawings:** Drawings are included as part of this application.
We intend to file a corresponding non-provisional application within one year. Please direct any correspondence regarding this application to the undersigned.
Thank you for your attention to this filing.
Sincerely,
[Your Full Name]
[Your Title]
[Your Company/Organization]
[Your Address]
[Your Phone Number]
[Your Email Address]Template 3: Design Patent Application Cover Letter
This template is for design patent applications, which have different requirements.
Subject Line Options:
- Design Patent Application – [Title of Design] – [Application Number]
- Submission of Design Patent Application – [Title]
- Design Patent Application – [Title] – [Inventor Name]
Dear Patent Examiner,
Enclosed is a design patent application for the new, original, and ornamental design for [Title of Design], as invented by [Inventor Full Name(s)].
**Application Details:**
- **Application Type:** Design Patent Application
- **Title:** [Title of Design]
- **Inventor(s):** [Full Name(s)]
- **Number of Claims:** [Number]
- **Filing Fee:** [Amount] (fee payment attached)
- **Declaration:** An inventor's declaration is included as required by 37 CFR 1.63.
**Description of the Design:**
The design is embodied in the attached drawings, which consist of [number] sheets of drawings showing the design in [list views, e.g., front, rear, top, bottom, left, right, perspective]. The design is characterized by [briefly describe the ornamental features].
**Drawings:** Drawings are submitted in compliance with 37 CFR 1.152.
We respectfully request that this application be examined and allowed. Should you have any questions, please contact the undersigned at [Your Phone Number] or [Your Email Address].
Thank you for your consideration.
Sincerely,
[Your Full Name]
[Your Title]
[Your Company/Organization]
[Your Address]
[Your Phone Number]
[Your Email Address]Best Practices for Submitting Your Patent Application
Beyond the cover letter, there are several best practices that can help ensure a smooth patent application process. Follow these guidelines to avoid common delays and frustrations.
- Double-check all forms: Ensure all required forms are completed accurately and signed. Incomplete or incorrect forms are a common cause of delays.
- Verify fee payments: Confirm that you have paid the correct filing fee and any additional fees for claims, search, or examination. Check the current USPTO fee schedule.
- Submit through the correct channel: The USPTO recommends electronic filing via the EFS-Web system. If you are filing by mail, send it to the correct address.
- Keep a copy: Always retain a copy of your complete application package and your cover letter for your records.
- Consider professional help: Patent law is complex. If you are not experienced, consider hiring a registered patent attorney or agent to review your application and cover letter.
What to Do If You Don't Receive a Response
The USPTO typically sends a filing receipt within a few weeks. If you haven't received any communication, here's a professional follow-up plan.
First, check the status online. Use the USPTO's Patent Application Information Retrieval (PAIR) system to check the status of your application. You can do this with the application number or the confirmation number.
Second, if the status is not available or shows an issue, contact the USPTO's Patent Electronic Business Center. They can assist with technical issues related to filing.
Third, if you have a registered attorney, they can request a status update through their portal. If you are representing yourself, you may need to call the USPTO's Office of Petitions.
Finally, if there's a significant delay, consider filing a request for a status check via a formal letter. However, be patient—the USPTO receives millions of applications, and processing times can vary.
Frequently Asked Questions
Q: Do I always need a cover letter for a patent application?
A: Yes, it is a best practice to include a cover letter. While the USPTO does not technically require a cover letter, it is recommended because it provides a clear summary of your application and helps the examiner understand your invention quickly. It also allows you to confirm that all necessary forms and fees are included.
Q: Can I file a patent application without a patent attorney?
A: Yes, you can file a patent application yourself (pro se). However, patent law is highly complex, and a professionally prepared application is more likely to succeed. A registered patent attorney or agent can help you navigate the process and avoid costly mistakes.
Q: How long does it take for the USPTO to process a patent application?
A: The timeline varies widely depending on the technology area and the backlog of the examining art unit. Typically, it can take 1 to 3 years for a non-provisional utility patent application to receive a first office action. There are expedited examination options for an additional fee.
Q: What is the difference between a provisional and a non-provisional patent application?
A: A provisional application is a temporary filing that establishes an early priority date but does not mature into a patent on its own. You must file a corresponding non-provisional application within one year to claim the provisional's priority. A non-provisional application is the formal application that is examined and can result in a granted patent.
Q: Should I mention prior art in the cover letter?
A: Yes, it is often helpful to mention any known prior art and explain how your invention differs. This shows the examiner that you are aware of the relevant landscape and can demonstrate the novelty of your invention. However, you are not required to disclose prior art in the cover letter—you can also include it in the specification.