INVENTION EVIDENCE AND DESIGN WORKSHEET
Yenra | https://yenra.com/inventions/
Updated October 9, 2026

Purpose: Study one invention claim or prepare a small design brief.
Use one copy per claim. Keep historical facts, your observations and your
interpretations separate. No physical experiment is required by this sheet.
Use appropriate equipment instructions and supervision for any practical work.

1. NEED AND CLAIM
Invention/project:
Who has the problem, and what task do they need to accomplish?
Current alternative:
Exact claim in your own words:
Who made the claim? Source URL/document/page and date:

2. MECHANISM
Input (energy, material, signal or user action):
Important components and their connections:
Output or useful effect:
Where does energy go, or how does information change?
Desired effect / unwanted consequence / test that could reveal it:

3. EVIDENCE
Stage: demonstration / pilot / deployment / sustained use / other (define)
What was actually observed?
Conditions, population, sample size, duration and measurement units:
Comparison or baseline:
What does the evidence support?
What remains uncertain?
Is this an inventor account, patent, test report, customer record or publicity?

4. DATED MILESTONES
Date | event type | person/organization | source | what it establishes
Use precise event types: filing, publication, grant, announcement, trial, sale.
A patent/application is technical and legal documentation, not a general
certificate of safety, consumer benefit or commercial success.

5. FIT IN THE REAL SETTING
Access, space and environment:
User effort, training and accessibility:
Storage, maintenance, support and other recurring work:
How will this be compared fairly with the current alternative?

6. NEXT TEST OR RESEARCH STEP
Question:
Prediction (label it as a prediction):
Method and conditions:
Success criterion chosen in advance:
What could count against the claim?
Observation/result:
Interpretation and its limits:
Next action, owner and review date:

EXAMPLE (FICTIONAL)
Claim: a campus transporter reduces time spent on trips between two buildings.
Baseline: door-to-door time for the existing route, including equipment handling.
Pilot: same task, record trip time plus storage, charging, training and unusable
routes. Compare complete work, not just top speed. Agree beforehand what
improvement and unresolved problems would justify continuing or stopping.

Related guides:
https://yenra.com/it-ginger-dean-kamen/
https://yenra.com/dean-kamen/
https://yenra.com/fit/dosho.html
https://yenra.com/inventions/zubbles.html