Free Invention Assignment Agreement Review

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Review your invention assignment agreement before signing. Fast, expert identification of IP scope issues, prior invention exclusions, and personal project protections.

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Key Takeaways

Understand what inventions you're assigning to the company

Document prior inventions that remain yours

Review scope of assignment (work time vs. all time)

Know state-specific protections for personal inventions

1-2 minutes*

Average Review Time

155+ compliance points analyzed*

Compliance Checks

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* Estimates based on typical documents. Actual results vary by document type and complexity.

Justee's invention assignment review tool analyzes IP assignment agreements for scope appropriateness, prior invention protection, personal project carve-outs, and state law compliance. The AI identifies risks including overly broad assignment scope, missing prior invention schedules, assignments covering personal time inventions, and violations of state employee protections. Justee provides suggested revisions based on intellectual property law and state-specific employee rights. Invention assignment agreements require employees to assign inventions to their employer. While standard practice, they can overreach by claiming IP created on personal time with personal resources. California, Delaware, and other states protect personal inventions. Common issues include scope covering unrelated inventions and missing attachments for prior inventions.

How It Works

1

Upload Your Document

Upload your contract in PDF, DOCX, or TXT format

2

AI Analysis

Our AI reviews your document for compliance issues

3

Review Findings

Get detailed findings with risk ratings and legal citations

4

Take Action

Use our suggestions to improve your document

What We Check

Review assignment scope

Analyze prior invention protections

Check personal project carve-outs

Evaluate state law compliance

Identify disclosure obligations

Common Risks We Identify

Overly broad assignment scope

Missing prior invention schedule

No personal project protection

State law violations

Unreasonable disclosure requirements

Hypothetical Case Study by Justee

Justee recently analyzed their invention assignment agreement at onboarding for a software engineer with a side project joining a startup in San Jose, CA.

Issue Found: The agreement would have assigned his personal mobile app to his employer, despite being developed entirely on personal time with personal equipment and being unrelated to his job duties.

Justee Recommendation: We documented the app in the Prior Inventions exhibit and added California Labor Code 2870 language explicitly confirming the employer had no claim to it.

Missing California Labor Code Notice

Problematic Language

"Employee hereby assigns to Company all inventions, original works, developments, and improvements which Employee may solely or jointly conceive during the period of employment."

Recommended Language

"Employee assigns to Company all inventions conceived during employment that (a) relate to Company's business or actual/anticipated R&D, or (b) result from work performed for Company. Pursuant to California Labor Code Section 2870, this Agreement does not apply to inventions developed entirely on Employee's own time without Company equipment or trade secrets, which do not relate to Company's business."

Why it matters: California law protects personal inventions, but employers must include the statutory notice. Without it, the assignment may be overbroad and the agreement itself may be invalid.

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"Justee is redefining the legal document compliance process across all practice areas, transforming hours of work into minutes, while reducing stress and boosting accuracy."

Artem Dolukhanyan
Artem Dolukhanyan

Partner, Corporate Transactions at Grayver Law Group

AI Review vs. Manual Review

FeatureJustee AI ReviewManual Review
Review Time2-5 minutes2-4 hours
CostFree trial available$150-500+
Legal CitationsAutomaticVaries by reviewer
Clause SuggestionsIncludedExtra fee
Availability24/7 instantBusiness hours
* Comparison data represents estimates based on industry research and internal testing for typical contract types. Review times, costs, and accuracy percentages vary by document complexity, length, jurisdiction, and specific legal requirements. See full disclaimer below.

Official Resources

USPTO Inventor Resources

USPTO resources for inventors

California Labor Code 2870

California employee invention protections

USPTO Inventor Resources

Patent rights and inventor ownership

Important Legal Disclaimer

Not Legal Advice: The information and analysis provided by Justee AI is for general informational purposes only and does not constitute legal advice. While we strive to provide accurate and helpful information, our AI-powered service is not a substitute for professional legal counsel.

No Attorney-Client Relationship: Use of Justee AI does not create an attorney-client relationship. Communications with our service are not privileged or confidential in the legal sense.

Consult a Professional: For specific legal matters, we strongly recommend consulting with a qualified attorney licensed in your jurisdiction. Legal requirements vary by location and circumstances, and only a licensed attorney can provide advice tailored to your specific situation.

Performance Estimates (*): All statistics, metrics, and numerical claims on this page — including review times, cost comparisons, accuracy percentages, and database size — are estimates based on internal testing, industry research, and typical use cases. Actual results vary based on document type, complexity, length, jurisdiction, and other factors. Cost comparisons reference publicly available average attorney rates and are not guaranteed savings. "1M+ laws and regulations" refers to the breadth of Justee's reference database and does not imply that every provision is checked against every law for every document.

By using our service, you acknowledge that you have read and agree to our Terms of Use and understand the limitations of AI-powered legal analysis. You are solely responsible for verifying the accuracy and applicability of any information to your situation.

Invention Assignment Agreement Review FAQ

Typically, inventions made using company resources, on company time, or related to company business. State laws may protect personal inventions.

A list of inventions you created before employment that you're not assigning. Attach this to your agreement to protect existing IP.

In California and several other states, yes—if created on personal time, with personal resources, and unrelated to company business.

Unlisted inventions may be claimed by the company. It's critical to document all prior inventions before signing.

Depends on your agreement. Justee identifies whether your agreement restricts side projects and suggests protective language.

Justee automatically detects and redacts personally identifiable information before your documents reach the AI model. Protected types include:

Personal data:
  • Names, email addresses, and phone numbers
  • Social Security numbers and tax identifiers (ITIN)
  • Physical addresses and dates of birth
  • Credit card and bank account numbers
  • Driver's license and passport numbers
  • Medical provider identifiers (NPI) and case numbers
Corporate and business data:
  • Company and organization names
  • Business addresses and geographic locations
  • SWIFT/BIC codes, IBAN numbers, and bank routing numbers
  • Business license numbers and attorney bar IDs
  • Corporate tax identifiers (EIN)
Our system achieves 100% detection of standard PII types and approximately 97% overall coverage. Certain rare identifiers — such as cryptocurrency wallet addresses and MAC addresses — may not be detected automatically. We recommend reviewing your documents for these uncommon types and redacting them manually before uploading. See our Privacy Policy and Terms of Use for details and limitations.

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Last updated: May 13, 2026

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