Examiner David M Kayal

Examiner David M Kayal appears to be about average relative to their peer examiners. Their lifetime grant ratio is 38.5%, they average 1.53 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 1.53

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Examiner Details

Observed Examiner Years: 4 years (2023-2026)
Phone: (703) 756-4576
Predicted Supervisor: Ricky Ngo
Supervisor Phone: (571) 272-3139
Tech Center: 2400 - Computer Networks, Multiplex, Cable and Cryptography/Security
Group: 2460 - Multiplex and VoIP

Metrics

Applications Evaluated: 78
Granted Applications: 30
Non-Granted Applications: 48
Avg OA / Grant: 1.53
Last OA Observed: June 2026 (1 months ago)
Art Units Seen: 2413 , 2464
Work Groups Seen: 2410 - Multiplex and VoIP

2460 - Multiplex and VoIP

Context Comparison

Scope	Examiners	Lifetime Grant Ratio	Avg OA / Grant
This Examiner	1	38.5%	1.53
Art Unit	24	67.8%	1.93
Group	225	60.7%	2.07
Tech Center	1,748	59.1%	2.14
USPTO	16,347	53.5%	1.98

Grant Timeline

Shaded region marks the last two observed years, where grant outcomes may lag due to recency.

Year	Applications	Granted	Grant Rate
No observed data before 2023; examiner may not yet have been active in the available dataset.
2023	4	4	100.0%
2024	22	18	81.8%
2025	21	8	38.1%
2026	31	0	0.0%

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

Rejection Timeline

OA #	Office Actions	§ 101 Percentage	§ 102 Percentage	§ 103 Percentage	§ 112 Percentage
1	78	0.0%	6.4%	89.7%	0.0%
2	40	0.0%	0.0%	97.5%	0.0%
3	21	0.0%	0.0%	100.0%	0.0%
4	10	0.0%	0.0%	100.0%	0.0%
5	5	0.0%	0.0%	100.0%	0.0%
6	3	0.0%	0.0%	100.0%	0.0%
7	1	0.0%	0.0%	100.0%	0.0%