Examiner Chang Olivia C

3775-CHANG-OLIVIA-C

Employment Information

Art Unit:3775 — Surgery
Group:3770 — Medical & Surgical Instruments, Treatment Devices, Surgery and Surgical Supplies
Classes: 606 — Surgery
623 — Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor
600 — Surgery
442 — Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
382 — Image analysis
128 — Surgery
703 — Data processing: structural design, modeling, simulation, and emulation
Phone:(571) 270-5017
Email:olivia.chang@uspto.gov
Location:VA 22314
Title:Patent Examiner(Materials Engineer)
Service:15 years
Grade:GS-14

Grant Rate and Difficulty Ranking

35
3-Year Grant rate: 84% over 308 cases
Difficulty: Easier
Difficulty Percentile: 35th

With Examiner Chang, you have a 84% chance of getting an issued patent by 3 years after the first office action. Examiner Chang is an easier examiner and in the 35th percentile across all examiners (with 100th percentile most difficult).

Grant Rate

Grant Rate Timeline

Below is the grant rate timeline for Examiner Chang, 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 3775

Examiner Chang's grant rate is lower than that of Art Unit 3775 and higher than that of the USPTO.

Average Office Actions Per Grant
Examiner Chang 1.5
Art Unit 3775 1.2

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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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