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Last updated: October 27, 2026

Christine Xu Nisula, USPTO Patent Examiner

Listed by the USPTO as NISULA, CHRISTINE XU

Tech Center 1700 • Art Units: 1743 1789

This examiner grants 40% of resolved cases

Performance Statistics

39.9%

Allow Rate

-25.1% vs TC avg

207

Total Applications

-10.3%

Interview Lift

1349

Avg Prosecution Days

Based on 178 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%

§101 Eligibility

9.8%

§102 Novelty

53.6%

§103 Obviousness

29.2%

§112 Clarity

Currently Pending Office Actions

App #	Title	Status	Assignee
17776868	AROMATIC-HETEROCYCLIC RING MELT ADDITIVES	Non-Final OA	3M INNOVATIVE PROPERTIES COMPANY
18006739	POLYAMIDE MULTIFILAMENT, AND METHOD OF MANUFACTURING SAME	Final Rejection	Toray Industries, Inc.

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Frequently Asked Questions

What is examiner Christine Xu Nisula's allowance rate?

39.9% of resolved applications examined by Christine Xu Nisula were allowed (178 resolved cases), compared with 59.4% across Art Unit 1743 over the last five years.

Does an interview help with examiner Christine Xu Nisula?

This examiner's interview lift is -10.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Christine Xu Nisula take to allow a patent?

Applications allowed by Christine Xu Nisula took 1,349 days on average from filing to allowance.

Which art unit does examiner Christine Xu Nisula work in?

Christine Xu Nisula examines applications in Art Unit 1743 in Tech Center 1700 (Chemistry & Materials).