Examiner Po Ming Cheung

1771-PO-MING-CHEUNG

Employment Information

Art Unit:1771 — Solid anti-friction devices, materials therefor, lubricant or separant compositions for moving solid surfaces, and miscellaneous mineral oil compositions
Group:1770 — Chemical Apparatus, Separation and Purification, Liquid and Gas Contact Apparatus
Classes: 585 — Chemistry of hydrocarbon compounds
208 — Mineral oils: processes and products
508 — Solid anti-friction devices, materials therefor, lubricant or separant compositions for moving solid surfaces, and miscellaneous mineral oil compositions
166 — Wells
431 — Combustion
549 — Organic compounds -- part of the class 532-570 series
362 — Illumination
359 — Optical: systems and elements
144 — Woodworking
Phone:(571) 270-5552
Email:ming.po@uspto.gov
Location:VA 22314
Title:Pat Examnr Gen Chem
Service:18 years
Grade:GS-13

Grant Rate and Difficulty Ranking

86
3-Year Grant rate: 40% over 257 cases
Difficulty: Very Hard
Difficulty Percentile: 86th

With Examiner Po, you have a 40% chance of getting an issued patent by 3 years after the first office action. Examiner Po is a very hard examiner and in the 86th percentile across all examiners (with 100th percentile most difficult).

Grant Rate

Grant Rate Timeline

Below is the grant rate timeline for Examiner Po, where the timeline is relative to the date of the first office action. The three-year grant rate is the percentage of applications granted at three years after the first office action.

Comparison with Art Unit 1771

Examiner Po's grant rate is lower than that of Art Unit 1771 and lower than that of the USPTO.

Average Office Actions Per Grant
Examiner Po 2.6
Art Unit 1771 1.7

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Recent Dispositions

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Appeals Statistics

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Appeal History

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Disclaimer: We do not provide any guarantees as to the accuracy of the statistics presented above and under
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