Stilta patent drafter

Workflow

When this skill triggers, follow these steps in order.

Step 1 — Receive the Invention Disclosure

Accept a plain-text or Markdown invention disclosure from the user. The disclosure should describe:

• The problem being solved
• The novel technical features of the invention
• Key components or steps of the system or method

If the user has not provided a disclosure, ask:

"Please paste or upload your invention disclosure. Describe the problem, the novel features of your invention, and the key components or steps involved."

Save the disclosure to a temporary file, e.g. disclosure.md.

Step 2 — Retrieve Prior Art via BM25

Run the dependency-free BM25 retriever over the committed prior-art corpus:

node scripts/retrieve.mjs resources/prior-art/ disclosure.md 3

The retriever:

• Tokenizes the disclosure and each corpus document
• Scores documents using the BM25 formula (k1=1.5, b=0.75)
• Returns the top-K files with scores and matched terms as JSON

Capture the JSON output. If the process exits non-zero, report the stderr message to the user and stop.

Inspect the top results. For each, note:

• The filename (maps to a prior-art reference)
• The BM25 score (higher = more relevant)
• The matched terms (shows which disclosure concepts overlap with prior art)

Step 3 — Draft Background and Claims

Run the scaffold assembler with the disclosure and retrieval results:

node scripts/draft.mjs disclosure.md retrieval.json draft.md

The assembler produces a Markdown file containing:

1. Background — situates the invention against the retrieved prior art, citing each reference with its BM25 score and matched terms, followed by a verbatim excerpt of the disclosure.
2. Claim 1 (Independent) — a system claim listing the key features extracted from the disclosure, in proper patent-claim format ("A system comprising… wherein…").
3. Claim 2 (Dependent) — a dependent claim referencing claim 1 and adding a communication interface feature.

Present the drafted sections to the user for review.

Step 4 — Flag Novelty Risks

Review the matched terms between the disclosure and the top retrieved prior art. For each prior art reference:

• Identify which disclosure features are already described in the prior art (potential novelty risks)
• Highlight features that appear only in the disclosure and not in any retrieved reference (potential novel aspects)
• Recommend that the user consult a registered patent attorney to evaluate patentability

Use this format:

Prior Art: [PA-1] <filename>
  Overlapping features: <list matched terms>
  Novelty risk: <brief assessment>

Novel aspects not found in retrieved prior art:
  - <feature A>
  - <feature B>

Example

See examples/input.md for a worked invention disclosure (smart umbrella with on-device rain prediction) and examples/output.md for the corresponding Background, Claims, and retrieval detail produced by the engine.

Run the example yourself from the skill root:

cd skills/stilta-patent-drafter
bash examples/run.sh

Important Disclaimer

This skill produces a structural scaffold for review purposes only. It is not legal advice and does not constitute a filed patent application. Patent claims require review and refinement by a registered patent attorney or agent before filing with any patent office.