Patent Drafting in Eureka by Patsnap is an AI-powered agent that helps you create, review, and refine patent application documents using your technical disclosure, supporting documents, drawings, or a description of your invention.
You can work with the agent conversationally to generate claims and specification sections, revise individual sections, work with patent drawings, search for relevant patents, check the application for potential issues, and export the completed documents.
What Can Patent Drafting Do?
- Generate claims and patent specification sections.
- Revise individual sections through chat.
- Upload and analyze technical documents.
- Upload, annotate, and work with patent drawings.
- Search for relevant patents using semantic search.
- Compare relevant patents with your invention.
- Run formality and semantic checks on your draft.
- Edit generated content.
- Export application documents for further review or editing.
Who Is It For?
- Patent attorneys and practitioners.
- In-house IP and patent teams.
- Law firms and external IP counsel.
- Inventors and R&D teams involved in patent drafting.
What Value Does Patent Drafting Bring?
Patent Drafting helps reduce the time and manual effort involved in preparing patent application documents. By turning technical disclosures, drawings, and invention details into structured draft content, it gives a faster starting point for drafting while keeping them in control of review and refinement.
It can help you:
- Spend less time creating first drafts from scratch.
- Keep claims, specification content, terminology, and drawings more consistent.
- Make targeted revisions without rewriting the entire application.
- Identify potential formatting, support, and consistency issues before export.
- Keep drafting, patent search, drawing review, and document checks within one workflow.
How to Use Patent Drafting
Step 1: Start Patent Drafting
Open Patent Drafting from Eureka. You can begin by uploading information about your invention or describing your technical solution directly in the prompt.
You can select a project, change the template, or the language.
Step 2: Provide Your Technical Information
Provide the technical information the agent should use to prepare the application. You can:
- Link information from an existing Invention Disclosure project.
- Upload a technical disclosure or supporting technical document.
- Describe your technical solution directly in the chat.
- Upload drawings or schematic diagrams.
Include sufficient detail about the technical solution, the problem being addressed, and the key innovations.
Step 3: Generate the Application
Generate the application using Auto Mode or Copilot Mode. Click on the send arrow once you are ready to generate the draft.
- Agent Mode: Generates the application sections sequentially.
- Copilot Mode: Lets you choose and refine individual sections before moving on.
Generated content appears in the document panel, where you can review it while working with the agent.
Step 4: Review and Revise
Edit generated content directly or ask the agent to revise a specific section through chat.
“The scope of protection in Claim 1 is too narrow. Please broaden it.”
“Add a second embodiment to the Detailed Description of Embodiments.”
“The abstract is too long. Please shorten it.”
Step 5: Check and Export
Once the draft is nearly complete, run the available checks and review any issues identified. When you are ready, use Export to download the application documents for further review or editing.
Patent Drafting Features
- Patent Drafting can generate the main components of a patent application, including:
- Claims: Independent and dependent claims.
- Title of Invention: A concise description of the subject matter.
- Technical Field: The technical field to which the invention relates.
- Background Art: Relevant prior art and existing technical problems.
- Summary of the Invention: The technical problem, solution, and effects.
- Brief Description of Drawings: Descriptions of drawings and reference numbers.
- Detailed Description of Embodiments: Detailed descriptions of implementations of the invention.
- Abstract: A concise summary of the core content of the invention.
Patent Drafting supports application generation for:
- CNIPA: Chinese output aligned with Patent Law Implementing Regulations.
- USPTO: English output aligned with 37 CFR and MPEP requirements.
- EPO: English output aligned with EPC requirements.
Patent Drafting adapts the structure, terminology, and formatting of the generated application according to the target patent office.
Because patent-office requirements differ, create a separate project for each target patent office.
Patent Drafting can generate both independent and dependent claims.
You can use the chat to request targeted changes, including:
- Broadening or narrowing a claim.
- Adding or removing technical features.
- Adding dependent claims.
- Correcting overlapping or inconsistent claims.
When reviewing claims, check the scope of protection, claim dependencies, terminology, and support within the specification.
Patent Drafting can analyze uploaded drawings and help prepare them for use in the patent application.
The drawing workflow can include:
- Component detection.
- Reference number assignment.
- Annotation generation.
- Drawing description generation.
If an annotation is incorrect, you can provide instructions in the chat to correct the component name, reference number, or position.
“Reference number 103 should point to the bearing on the left side.”
Reference numbers should remain consistent between the drawings and the specification.
Clear line drawings and engineering drawings are recommended because they generally provide better component-recognition results than photographs or rendered images.
For more complex inventions, consider providing multiple drawings, such as an overall view, enlarged detail views, and cross-sectional views.
Higher-resolution drawings can also improve component recognition.
Patent Drafting can analyze and annotate uploaded drawings. The current documentation does not confirm automatic conversion of photographs or rendered images into patent line drawings.
Patent Drafting includes semantic patent search capabilities to help identify published patents related to your technical solution.
Semantic search considers the meaning of the technical solution rather than relying only on exact keywords.
You can ask the agent to:
- Search for related patents.
- Search for patents related to a particular technology or claim.
- Open and review patent details.
- Compare a relevant patent with your invention.
Patent details can include the patent number, filing and publication dates, applicant, inventor, claims, abstract, legal status, and citation relationships.
Patent search results are based on published patent information and do not include patent applications that have not yet been published.
The Formality Check reviews formatting and structural requirements, including:
- Claim numbering.
- Claim dependency references.
- Required specification sections.
- Section titles.
- Drawing reference number consistency.
- Abstract length.
- Punctuation and formatting requirements.
To run the check, ask Patent Drafting:
“Please run a formality check.”
A Formality Check evaluates formatting and structure. It does not assess the technical substance of the application.
The Semantic Check performs a deeper review of the application content.
It can identify potential issues relating to:
- Sufficiency of disclosure.
- Support for claims.
- Consistency between claims, the specification, and the abstract.
- Claim clarity.
To run the check, ask:
“Please run a semantic check.”
Identified issues can include an explanation of the issue, its potential impact, and a suggested fix.
The Full Check combines the Formality Check and Semantic Check.
You can run it by asking:
“Please run a full check.”
Issues can be categorized as:
- Error: Issues that should be addressed first.
- Warning: Potential risks that should be reviewed.
- Info: Optional improvements or optimizations.
A Full Check can be useful after completing the first draft, after major revisions, and during final review.
You do not need to regenerate the complete application whenever you want to make a change.
You can ask Patent Drafting to:
- Broaden or narrow a claim.
- Add or remove a technical feature.
- Add dependent claims.
- Rewrite a section.
- Correct inaccurate background information.
- Add another embodiment.
- Shorten an abstract.
- Correct drawing annotations.
- Compare your invention with a patent.
- Run document checks.
Be specific about the section and change you want so the agent can make a targeted revision.
- Keep the following considerations in mind when using Patent Drafting:
- AI-generated claims, specification content, annotations, search analysis, and suggested revisions require review.
- Patent-office requirements differ between CNIPA, USPTO, and EPO.
- Patent search cannot identify unpublished patent applications.
- Drawing recognition depends on image quality.
- Automatically generated drawing annotations and reference numbers may require correction.
- Formality checks do not assess technical substance.
- Semantic Check results are AI-generated assessments and do not represent the final determination of a patent office.
- Incomplete or inaccurate source information can affect the quality of the generated draft.
Recommended Workflow
- Provide your technical disclosure and supporting materials.
- Add drawings where relevant.
- Generate the claims and specification.
- Review the claims and individual specification sections.
- Check drawing annotations and reference numbers.
- Review relevant patent search results.
- Make targeted revisions through the chat.
- Run a Full Check.
- Review and resolve identified issues.
- Export the application for further review or editing.
Key Takeaways
- Patent Drafting supports CNIPA, USPTO, and EPO drafting workflows.
- You can generate claims, specification sections, abstracts, and drawing descriptions.
- Auto Mode supports faster first-draft generation, while Copilot Mode provides more control.
- You can upload technical documents and drawings or describe the invention directly.
- Patent Drafting can assist with drawing annotations, semantic patent search, and application checks.
- Most revisions can be requested through chat without regenerating unrelated sections.
- Review all AI-generated content before relying on it.