Company or institution

PetroChina Company Limited

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229 applicationsfiled 2006 to 2026

Allowance rate

80%

+5 pts vs the USPTO range 74% to 85%

Rejections before allowance

1.1

−0.5 vs the USPTO

Months to first action

21.2 mo

+2.6 vs the USPTO

Needed an RCE

12%

−15 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

E21B 33 apps

B01J 33 apps

G01V 25 apps

G01N Investigating or analysing materials24 apps

C09K 21 apps

C08F 21 apps

Art units

OPAP23 apps

173220 apps

177112 apps

367610 apps

177210 apps

17639 apps

Examiners met

The examiners seen most, and how it went with each

Docket Central23 apps

n/a

Yun Qian7 apps

86%

Elizabeth D Wood7 apps

100%

Kumar R Bhushan6 apps

100%

Taiwo Oladapo5 apps

Catherine S Branch5 apps

100%

Anthony J Zimmer4 apps

100%

Yong-Suk Ro4 apps

100%

Bars show the share of decided applications that were allowed.

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Who represents them

Law firms and agents on their applications

HAMILTON, BROOK, SMITH & REYNOLDS, P.C.43 apps

86%

Meunier Carlin & Curfman LLC28 apps

78%

LOZA & LOZA LLP/MFF22 apps

86%

FOLEY & LARDNER LLP15 apps

93%

HOFFMAN WARNICK LLC13 apps

85%

MICHAEL BEST & FRIEDRICH LLP (Mke)12 apps

100%

Davis Wright Tremaine LLP - Seattle11 apps

100%

WEAVER AUSTIN VILLENEUVE & SAMPSON LLP8 apps

63%

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
19617112	ORGANIC POLYMER CARRIER, ETHYLENE OLIGOMERIZATION CATALYST SYSTEM, AND PREPARATION …	2026-08-20	Pending	0	0	n/a
19611547	PERMEABILITY EVALUATION METHOD AND APPARATUS BASED ON OIL-BASED MUD ELECTRICAL IMAG…	2026-07-31	Pending	0	0	n/a
19602138	CARBON DIOXIDE CAPTURE SYSTEM AND METHOD, AND USE	2026-06-29	Pending	0	0	n/a
15270241	Method and apparatus for adaptive signal processing	2012-01-10	Allowed	1	0	12.0 mo
15958411	Composition and method for controlled release	2015-02-11	Abandoned	4	1	23.0 mo
15981499	Distributed ledger transaction verification	2018-03-12	Allowed	3	0	20.0 mo
15412508	Thermal management of battery assemblies	2021-04-13	Pending	2	1	17.0 mo
15604548	Machine learning model for anomaly detection	2012-05-14	Allowed	1	0	14.0 mo
15216442	Wireless power transfer coil arrangement	2015-06-15	Abandoned	4	1	25.0 mo
15262701	Catalyst for selective hydrogenation	2018-07-16	Allowed	3	0	22.0 mo

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