Examiner Dr. Tienna M Deroy

Appears inactive Last observed office action: September 2025 (7 months ago).

Examiner Dr. Tienna M Deroy appears to be about average relative to their peer examiners. Their lifetime grant ratio is 30.0%, they average 1.33 office actions per granted patent, and their rejection profile is dominated by §103.

Difficulty vs AU About Average

Difficulty vs Group About Average

Difficulty vs TC About Average

Difficulty vs USPTO About Average

Average OA / Grant 1.33

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Examiner Details

Observed Examiner Years: 1 years (2025-2025)
Tech Center: 1700 - Chemical and Materials Engineering
Group: 1730 - Metallurgy, Inorganic Chemistry, Catalysts, Electrophotography, Photolithography

Metrics

Applications Evaluated: 20
Granted Applications: 6
Non-Granted Applications: 14
Avg OA / Grant: 1.33
Last OA Observed: September 2025 (7 months ago)
Art Units Seen: 1732
Work Groups Seen: 1730 - Metallurgy, Inorganic Chemistry, Catalysts, Electrophotography, Photolithography

Context Comparison

Scope	Examiners	Lifetime Grant Ratio	Avg OA / Grant
This Examiner	1	30.0%	1.33
Art Unit	29	53.2%	1.92
Group	185	51.5%	1.97
Tech Center	1,713	47.3%	2.14
USPTO	16,116	54.8%	1.98

Grant Timeline

Year	Applications	Granted	Grant Rate
No observed data before 2025; examiner may not yet have been active in the available dataset.
2025	20	6	30.0%
No observed data after 2025; examiner may have gone inactive or moved out of examining work.

6 family-cache-validated grants; 0 OA-only grant signals.

Rejection Timeline

OA #	Office Actions	§ 101 Percentage	§ 102 Percentage	§ 103 Percentage	§ 112 Percentage
1	24	0.0%	12.5%	70.8%	0.0%
2	4	0.0%	25.0%	75.0%	0.0%