Case Background
In patent prosecution, converting an inventor’s technical disclosure into a legally compliant, robust patent application is a core skill for agents. Using a case study on a "Bolt Through-Hole Rate Calculation Method," this article systematically dissects the transformation process and reveals drafting techniques for maximizing protection.
1. Precision Extraction of Technical Core
Technical disclosures by applicants often contain abundant details but lack legally framed innovation points. Agents must refine the core through:
(1) Innovation Identification:
1) Compare background technology and inventive content to pinpoint breakthroughs.
2) Example: The core innovation here lies in "generating a binary image via 3D point cloud projection onto intersecting planes, combined with distance transform algorithms to enhance calculation accuracy"—a fundamental departure from traditional simplified circular distance calculations.
(2) Technical Problem Reframing:
1) Transform vague descriptions (e.g., "ignoring roundness errors") into precise legal language.
2) Redefined Issue: "Simplified calculations of hole spacing neglect bolt hole roundness and structural feature-induced errors, leading to skewed results."
2. Structured Claim Drafting
(1) Independent Claim Optimization:
1) Disclosure: "Calculate the maximum inscribed circle radius in a binarized image."
2) Final Draft: Break into a step-by-step chain:
① Project 3D point clouds onto intersecting planes.
② Generate a binary image.
③ Calculate maximum inscribed circle radius.
④ Compare with bolt radius.
(2) Supporting Dependent Claims:
1) Convert fragmented rules (e.g., "angle threshold: 0.5°," "point cloud quantity: 1.5–2x") into dependent claims.
2) Replace specific values with design-related ranges (e.g., "predetermined threshold") and clarify in the specification.
(3) Step Extension and Specification:
1) Disclosure: "Filter nearest point clouds."
2) Final Draft: Expand into Claims 5–6:
① Define "angle threshold for sector division."
② Specify "nearest projection point connection rules."
③ Refine "generate grayscale image" into "assign pixel values (255/0)."
3) Purpose: Ensure enforceability and mitigate risks under the doctrine of equivalents.
Conclusion
Patent drafting bridges technical innovation and legal protection. A skilled agent combines technical insight with legal rigor to transform ideas into high-value assets through:
1. Precise claim design (modular steps, layered protection),
2. Robust technical arguments (problem-solution alignment),
3. Standardized language (avoiding ambiguity).
This case exemplifies how structured translation of technical disclosures strengthens patent quality and enforceability.
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