Prosecution Insights
Last updated: October 02, 2026

Examiner: ZHAO, XIAO SI

Tech Center 2800 • Art Units: 1712 1714 1744 1792 2872

This examiner grants 58% of resolved cases

Analysis

Xiao Si Zhao works in Tech Center 2800 and Art Unit 1712, having resolved 485 cases. The examiner has an allowance rate of 57.7 percent. This 57.7 percent rate indicates a moderate level of difficulty in securing an allowance, requiring a well-supported application. The 485 resolved cases provide a solid foundation for understanding the examiner's typical prosecution outcomes in Tech Center 2800.

The median days to allowance is 1214 days. The interview lift is 25.0 percent. This 25.0 percent lift suggests that conducting an interview is a productive strategy for increasing the chances of an allowance with this examiner. By utilizing the lift, practitioners can improve upon the baseline allowance rate. The 1214 days median timeline is an important consideration for applicants when planning their patent strategy. These metrics together suggest that active engagement can significantly enhance the probability of success in Art Unit 1712.

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

Performance Statistics

57.7%
Allow Rate
-10.3% vs TC avg
499
Total Applications
+25.0%
Interview Lift
1214
Avg Prosecution Days
Based on 485 resolved cases, 2023–2026

Rejection Statute Breakdown

1.0%
§101 Eligibility
12.3%
§102 Novelty
55.8%
§103 Obviousness
25.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18320448 Plasticizing Device, Injection Molding Device, And Three-Dimensional Modeling Device Non-Final OA SEIKO EPSON CORPORATION
18108655 NOZZLE HAVING DOUBLE PIPE STRUCTURE, AND PHOTORESIST DISPENSER AND SPIN COATER, EACH INCLUDING THE NOZZLE Final Rejection SEMES CO., LTD.
17832431 APPARATUSES OF BINDER JETTING 3D PRINTING WITH POWDER DISTRIBUTOR, INKJET PRINTHEAD, AND CURING UNIT MOUNTED ON AND FIXED RELATIVE TO A MOUNTING APPARATUS Non-Final OA Sakuu Corporation

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