Law firm or agent

Chang and Hale LLP

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1,343 applicationsfiled 2008 to 2026

Allowance rate

86%

+10 pts vs the USPTO range 84% to 88%

Rejections before allowance

1.6

level with the USPTO

Months to first action

12.2 mo

−6.4 vs the USPTO

Needed an RCE

35%

+8 pts vs the USPTO

Timeline

Applications by filing year: drag across the years to study a period

Allowed in green, abandoned in red, pending in grey. The figures above and the charts that can be recomputed by filing year follow the span you pick.

Compared with the office

Against every applicant before the USPTO

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Trend

Allowance by filing year

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Domains

Where the applications fall

CPC subclasses

H03F 257 apps

H04B Transmission150 apps

G06F Electric digital data processing122 apps

H10W 100 apps

H10D 92 apps

H03K 78 apps

Art units

2842147 apps

2843118 apps

OPAP70 apps

264966 apps

264834 apps

283833 apps

Examiners met

The examiners seen most, and how it went with each

Docket Central75 apps

n/a

Patricia T Nguyen28 apps

86%

Hieu P Nguyen27 apps

88%

Khiem D Nguyen26 apps

79%

Henry Choe23 apps

86%

Tomi Sweet Skibinski22 apps

86%

Steven J Mottola21 apps

95%

Nguyen Thanh Vo18 apps

93%

Bars show the share of decided applications that were allowed.

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Who they file for

Clients with the most applications

SKYWORKS SOLUTIONS, INC.948 apps

84%

Western Digital Technologies, Inc.162 apps

96%

Bourns, Inc.31 apps

81%

Hayden AI Technologies, Inc.17 apps

100%

LIFE PATCH INTERNATIONAL11 apps

63%

SKYWORKS GLOBAL PTE. LTD.9 apps

100%

upthere, inc.9 apps

100%

TOHOKU UNIVERSITY8 apps

100%

Bars show the share of decided applications that were allowed.

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Rejection fingerprint

What gets rejected, by statute

Share of parsed office actions raising each ground; blue is the USPTO.

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What works

Allowance by strategy used

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Interviews

Does an interview help?

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Applications

Every application in the record

Application	Title	Filed	Status	Rejections	RCEs	To 1st action
19684818	INFRARED-ENHANCED MODULAR RESISTANCE TRAINING SYSTEMS	2026-05-21	Pending	0	0	n/a
19579422	STEERABLE MEDICAL INSTRUMENT	2026-04-17	Pending	0	0	n/a
19577047	STABILITY CIRCUITS AND METHODS FOR POWER AMPLIFIERS	2026-03-24	Pending	0	0	n/a
15160172	Method and apparatus for adaptive signal processing	2012-01-10	Allowed	1	0	12.0 mo
15777637	Composition and method for controlled release	2015-02-11	Abandoned	4	1	23.0 mo
15595366	Distributed ledger transaction verification	2018-03-12	Allowed	3	0	20.0 mo
15757403	Thermal management of battery assemblies	2021-04-13	Pending	2	1	17.0 mo
15502034	Machine learning model for anomaly detection	2012-05-14	Allowed	1	0	14.0 mo
15795513	Wireless power transfer coil arrangement	2015-06-15	Abandoned	4	1	25.0 mo
15467462	Catalyst for selective hydrogenation	2018-07-16	Allowed	3	0	22.0 mo

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