Law firm or agent

LOWENSTEIN SANDLER LLP / Purdue

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148 applicationsfiled 2007 to 2025

Allowance rate

56%

−19 pts vs the USPTO range 48% to 65%

Rejections before allowance

2.3

+0.7 vs the USPTO

Months to first action

5.4 mo

−13.2 vs the USPTO

Needed an RCE

61%

+34 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

A61K Medical preparations141 apps

A61P Therapeutic activity of compounds1 apps

G01N Investigating or analysing materials1 apps

A61J 1 apps

A23B 1 apps

A01N 1 apps

Art units

161574 apps

161312 apps

162911 apps

16287 apps

16116 apps

16196 apps

Examiners met

The examiners seen most, and how it went with each

Olga V Tcherkasskaya32 apps

26%

Randeep Singh25 apps

60%

Melissa S Mercier12 apps

83%

Kevin E Weddington11 apps

82%

Blessing M Fubara8 apps

71%

Docket Central5 apps

n/a

John S Kenyon5 apps

75%

Tigabu Kassa4 apps

67%

Bars show the share of decided applications that were allowed.

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Who they file for

Clients with the most applications

Purdue Pharma L.P.110 apps

57%

PURDUE PHARMACEUTICALS L.P.19 apps

59%

RHODES PHARMACEUTICALS L.P.8 apps

60%

Rhodes Technologies4 apps

67%

KNOA PHARMA LLC1 apps

100%

MUNDIPHARMA INTERNATIONAL LIMITED1 apps

NANOMERICS LTD.1 apps

n/a

Rhodes Pharmaeuticals, L.P.1 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
19165466	AUTOINJECTOR FOR OPIOID OVERDOSE RESCUE	2025-09-15	Pending	0	0	n/a
19317839	Encased Tamper Resistant Controlled Release Dosage Forms	2025-09-03	Pending	0	0	n/a
19298851	PHARMACEUTICAL RESINATE COMPOSITIONS AND METHODS OF MAKING AND USING THEREOF	2025-08-13	Pending	0	0	n/a
15215386	Method and apparatus for adaptive signal processing	2012-01-10	Allowed	1	0	12.0 mo
15579217	Composition and method for controlled release	2015-02-11	Abandoned	4	1	23.0 mo
15985876	Distributed ledger transaction verification	2018-03-12	Allowed	3	0	20.0 mo
15637722	Thermal management of battery assemblies	2021-04-13	Pending	2	1	17.0 mo
15183412	Machine learning model for anomaly detection	2012-05-14	Allowed	1	0	14.0 mo
15723480	Wireless power transfer coil arrangement	2015-06-15	Abandoned	4	1	25.0 mo
15625940	Catalyst for selective hydrogenation	2018-07-16	Allowed	3	0	22.0 mo

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