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| Art Unit: | 2872 — Optical: systems and elements |
|---|---|
| Group: | 2870-2880 — Optics/Photocopying |
| Classes: |
359 — Optical: systems and elements 349 — Liquid crystal cells, elements and systems 356 — Optics: measuring and testing 345 — Computer graphics processing and selective visual display systems 348 — Television 385 — Optical waveguides 427 — Coating processes 372 — Coherent light generators 362 — Illumination 353 — Optics: image projectors |
| Phone: | (571) 272-2309 |
| Email: | audrey.chang@uspto.gov |
| Title: | Pat Examnr Cheml Engrg |
| Service: | 32 years |
| Grade: | GS-14 |
| 3-Year Grant rate: | 53% over 459 cases |
|---|---|
| Difficulty: | Harder |
| Difficulty Percentile: | 78th
|
With Examiner Chang, you have a 53% chance of getting an issued patent by 3 years after the first office action. Examiner Chang is a harder examiner and in the 78th percentile across all examiners (with 100th percentile most difficult).
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.
Examiner Chang's grant rate is lower than that of Art Unit 2872 and lower than that of the USPTO.
| Average Office Actions Per Grant | |
|---|---|
| Examiner Chang | 2.4 |
| Art Unit 2872 | 1.2 |
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Disclaimer: We do not provide any guarantees as to the accuracy of the statistics presented above and under
no circumstances will we be liable for any outcome resulting from your reliance on the above statistics.