Prosecution Insights
Last updated: October 02, 2026

Examiner: LEYSON, JOSEPH S

Tech Center 1700 • Art Units: 1731 1742 1744 1791

This examiner grants 66% of resolved cases

Analysis

Joseph S Leyson serves as an examiner in Tech Center 1700, working within Art Unit 1731. The examiner has 753 resolved cases, which have resulted in an allowance rate pct of 66.3. This allowance rate pct provides a baseline for the expected outcome of applications on this docket. Practitioners should consider the interview lift pct of 35.9 when developing a prosecution strategy. This interview lift pct suggests that direct engagement with the examiner is associated with an increased probability of allowance. For cases that are allowed, the median days to allowance is 1119.

The 753 resolved cases provide a data set for understanding the examiner's historical actions. The 66.3 allowance rate pct suggests a specific probability of success for applicants in Art Unit 1731. The 35.9 interview lift pct is a factor for those deciding whether to conduct an interview. Finally, the 1119 median days to allowance helps in planning the overall timeline for patent acquisition. These metrics assist in making decisions during the patent application process.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

66.3%
Allow Rate
+1.3% vs TC avg
784
Total Applications
+35.9%
Interview Lift
1119
Avg Prosecution Days
Based on 753 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
14.5%
§102 Novelty
44.4%
§103 Obviousness
33.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18993769 Sterile blow molding machine with airlock and method for the operation thereof Non-Final OA KRONES AG
18278172 LIP GAP ADJUSTING DEVICE, EXTRUSION MOLDING DIE, EXTRUSION MOLDING APPARATUS, METHOD FOR ADJUSTING LIP GAP, AND METHOD FOR MANUFACTURING FILM Non-Final OA THE JAPAN STEEL WORKS, LTD.
17132323 EXTRUSION MOLDING MACHINE, AND METHOD FOR PRODUCING MOLDED BODY Final Rejection NGK INSULATORS, LTD.
18699659 METHOD FOR PRODUCING INSULATING ELEMENTS Non-Final OA SIKA TECHNOLOGY AG
17774337 NATURALLY DEGRADABLE MICROCAPSULES AND A METHOD OF PREPARING THE SAME Final Rejection LG HOUSEHOLD & HEALTH CARE LTD.
18756320 System for Producing a Blown Film Non-Final OA Windmöller & Hölscher KG
18298872 METHOD FOR CHANGING THE MATERIAL IN AN EXTRUSION DEVICE Final Rejection Windmöller & Hölscher KG

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month