Prosecution Insights
Last updated: October 27, 2026

Christina Ann Johnson, USPTO Patent Examiner

Listed by the USPTO as JOHNSON, CHRISTINA ANN

Tech Center 3700 • Art Units: 1700 1738 1742 1754 1791 3791

This examiner grants 41% of resolved cases

Performance Statistics

41.3%
Allow Rate
-28.7% vs TC avg
160
Total Applications
-13.4%
Interview Lift
1382
Avg Prosecution Days
Based on 121 resolved cases, 2023–2026

Rejection Statute Breakdown

1.0%
§101 Eligibility
18.8%
§102 Novelty
54.4%
§103 Obviousness
19.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18701056 PARTICULATE FILTER Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18690914 EXHAUST GAS PURIFICATION CATALYST, AND EXHAUST GAS PURIFICATION CATALYST APPARATUS FOR VEHICLES, USING SAME Non-Final OA NISSAN MOTOR CO., LTD.
18722546 MULTI-LAYER FILM, AND MULTI-LAYER STRUCTURE USING SAME Non-Final OA Kuraray Co., Ltd.
19253275 OSMOTIC IMBALANCE METHODS FOR BILAYER FORMATION Non-Final OA Roche Sequencing Solutions, Inc.
18708934 METHOD FOR ENCAPSULATING A MICROSTRUCTURED LENS BY PIPC Final Rejection ESSILOR INTERNATIONAL
18542166 METHOD AND SYSTEM FOR MANUFACTURING AN OPTICAL LENS HAVING AN ELECTRONIC COMPONENT Final Rejection Essilor International
19197245 LOW ENERGY VISBREAKING rLDPE FILM Non-Final OA Basell Polyolefine GmbH
18275033 INDENO-FUSED NAPHTHOPYRAN COMPOUND PARTICLES, METHOD OF PRODUCING POLYMERIZABLE COMPOSITION AND METHOD OF PRODUCING PHOTOCHROMIC ARTICLE Final Rejection HOYA LENS THAILAND LTD.
18579568 Processes for Regenerating Catalysts and for Upgrading Alkanes and/or Alkyl Aromatic Hydrocarbons Non-Final OA ExxonMobil Chemical Patents Inc.
17610399 A System and Method for the Production of High Strength Materials Non-Final OA CALIX LTD

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Frequently Asked Questions

What is examiner Christina Ann Johnson's allowance rate?

41.3% of resolved applications examined by Christina Ann Johnson were allowed (121 resolved cases), compared with 40.4% across Art Unit 1700 over the last five years.

Does an interview help with examiner Christina Ann Johnson?

This examiner's interview lift is -13.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Christina Ann Johnson take to allow a patent?

Applications allowed by Christina Ann Johnson took 1,382 days on average from filing to allowance.

Which art unit does examiner Christina Ann Johnson work in?

Christina Ann Johnson examines applications in Art Unit 1700 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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