USPTO Examiner LEESER ERICH A - Art Unit 1622

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18905898METHOD OF TREATING HAIR LOSS DISORDERSOctober 2024March 2025Allow500YesNo
18750014METHODS OF TREATING GASTROINTESTINAL STROMAL TUMORSJune 2024March 2025Allow910NoNo
18750032METHODS OF TREATING GASTROINTESTINAL STROMAL TUMORSJune 2024April 2025Allow1010NoNo
18674104MIRDAMETINIB TREATMENTMay 2024June 2025Abandon1210NoNo
18674233MIRDAMETINIB TREATMENTMay 2024September 2024Allow410YesNo
18674168MIRDAMETINIB TREATMENTMay 2024January 2025Allow810NoNo
18601528COMPOUNDS AND METHODS FOR TREATMENT OF VIRAL INFECTIONSMarch 2024October 2024Allow701NoNo
18437335PRMT5 INHIBITORS AND METHODS OF USEFebruary 2024July 2024Allow500NoNo
184254663-(2-(6-METHOXYPYRIDIN-3-YL)-4,5-DIPHENYL-1H-IMIDAZOL-1-YL)-N,N-DIMETHYLPROPAN-1-AMINE AS AN ANTICANCER COMPOUNDJanuary 2024June 2025Abandon1620NoNo
184127586-AMINO-8,9-DI(4-METHOXYPHENYL)-2-OXO-3,9-DIHYDRO-2H-[1,3]THIAZOLO[5',4':5,6]PYRANO[2,3-B]PYRIDINE-7-CARBONITRILE AS ANTICANCER COMPOUNDJanuary 2024June 2025Abandon1720YesNo
183947033-(2-(4-METHOXYPYRIDIN-3-YL)-4,5-DIPHENYL-1H-IMIDAZOL-1-YL)-N,N-DIMETHYLPROPAN-1-AMINE AS AN ANTI-CANCER COMPOUNDDecember 2023June 2025Abandon1720NoNo
18538067JAK1 SELECTIVE INHIBITORSDecember 2023July 2025Allow1901NoNo
18529311PYRIDO[3',4':4,5]PYRROLO[3,2-C]NAPHTHYRIDINE COMPOUNDS AS CK2 INHIBITORSDecember 2023January 2025Allow1311NoNo
18526380Substituted 4-Benzyl And 4-Benzoyl Piperidine DerivatesDecember 2023June 2025Allow1810NoNo
18526408Spiropiperidine DerivativesDecember 2023June 2025Allow1810NoNo
18518127MIRDAMETINIB TREATMENTNovember 2023May 2025Allow1711NoNo
18385742IMIDAZOPYRIDAZINE COMPOUNDS AND USES THEREOFOctober 2023July 2025Allow2001NoNo
18237152COMPOUNDS AND METHODS FOR TREATMENT OF VIRAL INFECTIONSAugust 2023June 2025Allow2210NoNo
18225966THERAPEUTIC COMPOUNDSJuly 2023June 2025Allow2310NoNo
18204149Methods and Compositions for Treating Melanoma and Non-Melanoma Skin CancersMay 2023May 2025Abandon2401NoNo
18320805WNT SIGNALING PATHWAY INHIBITORS FOR TREATMENTS OF DISEASEMay 2023March 2025Allow2211NoNo
18196357SPIRO AROMATIC RING COMPOUND AND USE THEREOFMay 2023June 2025Allow2511NoNo
183149135-MEMBERED AZA-HETEROCYCLIC CONTAINING DELTA-OPIOID RECEPTOR MODULATING COMPOUNDS, METHODS OF USING AND MAKING THE SAMEMay 2023May 2025Abandon2501NoNo
18143765CRYSTALLINE (R)-5-CARBAMOYLPYRIDIN-3-YL-2-METHYL-4-(3-(TRIFLUOROMETHOXY)BENZYL)PIPERAZINE-1-CARBOXYLATE, COMPOSITIONS AND METHODS OF USE THEREOFMay 2023May 2025Allow2410NoNo
18311646Small Molecule Inhibitors of KRAS G12C MutantMay 2023December 2024Allow2001YesNo
18311639Small Molecule Inhibitors of KRAS G12C MutantMay 2023December 2024Allow2001YesNo
18140730MODULATORS OF METHYL MODIFYING ENZYMES, COMPOSITIONS AND USES THEREOFApril 2023January 2025Allow2110NoNo
18135607COMPOUNDS AND COMPOSITIONS FOR IMMUNOTHERAPYApril 2023May 2025Abandon2501NoNo
18134843METALLOENZYME INHIBITORS FOR TREATING CANCERS, ALZHEIMER'S DISEASE, HEMOCHROMATOSIS, AND OTHER DISORDERSApril 2023February 2025Allow2201YesNo
18131226PYRIDINE, PYRAZINE, AND TRIAZINE COMPOUNDS AS ALLOSTERIC SHP2 INHIBITORSApril 2023April 2025Abandon2501NoNo
18088045DIHYDROINDOLIZINONE DERIVATIVEDecember 2022March 2025Abandon2701NoNo
18062295ACID ADDITION SALTS OF PIPERAZINE DERIVATIVESDecember 2022January 2025Allow2501YesNo
180607963-hydroxy-N-(3-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)phenyl)pyrrolidine-1-carboxamide DerivativesDecember 2022February 2025Abandon2610NoNo
17924537USE OF AMINOACETONITRILE COMPOUNDS FOR THE TREATMENT OF INFECTION AND DISEASENovember 2022September 2024Allow2211YesNo
17959799COMPOUNDS AND THEIR METHODS OF USEOctober 2022February 2025Abandon2801NoNo
17946181HETEROCYCLIC RIP1 KINASE INHIBITORSSeptember 2022January 2025Allow2811NoNo
17908296ELASTASE INHIBITOR PRODRUG AND USE THEREOFAugust 2022June 2025Allow3300YesNo
17822871N-PYRIDINYL ACETAMIDE DERIVATIVES AS WNT SIGNALLING PATHWAY INHIBITORSAugust 2022June 2025Abandon3411NoNo
17867229NON BRAIN PENETRANT A2A INHIBITORS AND METHODS FOR USE IN THE TREATMENT OF CANCERSJuly 2022April 2025Abandon3301NoNo
17863236PYRIDINIUM SALT AND PEST CONTROL AGENTJuly 2022April 2025Abandon3401NoNo
17861023Compounds for the Prevention and Treatment of Medical Disorders and Uses ThereofJuly 2022March 2025Allow3311YesNo
17853904SUBSTITUTED BENZYL-TRIAZOLE COMPOUNDS FOR CBL-B INHIBITION, AND FURTHER USES THEREOFJune 2022July 2024Allow2411NoNo
17839215G1T38 SUPERIOR DOSAGE REGIMESJune 2022March 2025Allow3311NoNo
17836255ANTIBACTERIAL COMPOUNDSJune 2022February 2025Allow3211NoNo
17781167FLUORINE-CONTAINING HETEROCYCLIC DERIVATIVES WITH MACROCYCLIC STRUCTURE AND USE THEREOFMay 2022June 2025Allow3600YesNo
17827547PYRIDAZINONE COMPOUNDS AND USES THEREOFMay 2022September 2024Allow2801YesNo
17779091TRI-HETEROCYCLIC COMPOUND AS JAK INHIBITOR, AND USE THEREOFMay 2022May 2025Allow3600NoNo
17736924NOVEL SUBSTITUTED BENZIMIDAZOLE DERIVATIVES AS D-AMINO ACID OXIDASE (DAAO) INHIBITORSMay 2022January 2025Allow3311NoNo
17773418CONDENSED BI-HETEROCYCLES AS INHIBITING AGENTS FOR BRUTON'S TYROSINE KINASEApril 2022April 2025Allow3500YesNo
17772993TETRAHYDROCANNABINOL DERIVATIVES, PREPARATION METHOD THEREOF AND USE THEREOFApril 2022June 2025Allow3701YesNo
17731279NLRP3 MODULATORSApril 2022August 2024Allow2701NoNo
177720935-HETEROARYL-1H-PYRAZOL-3-AMINE DERIVATIVEApril 2022May 2025Allow3611YesNo
17728943PROTEASE INHIBITORSApril 2022March 2025Allow3500YesNo
17659269Elagolix Sodium Compositions and ProcessesApril 2022August 2024Allow2810NoNo
17709847NOVEL MODULATORS OF THE 5-HYDROXYTRYPTAMINE RECEPTOR 7 AND THEIR METHOD OF USEMarch 2022February 2025Allow3511NoNo
17709242SUBSTITUTED BENZIMIDAZOLE DERIVATIVES AS D-AMINO ACID OXIDASE (DAAO) INHIBITORSMarch 2022June 2024Allow2711YesNo
17651187DOSING REGIMENS FOR USE IN TREATING MYELOFIBROSIS AND MPN-RELATED DISORDERS WITH NAVITOCLAXFebruary 2022July 2024Allow2911YesNo
17582851SELECTIVE ANDROGEN RECEPTOR DEGRADER (SARD) LIGANDS AND METHODS OF USE THEREOFJanuary 2022June 2024Allow2811NoNo
17617956METHOD FOR PREPARING CHOLESTEROL, DERIVATIVE THEREOF, AND ANALOG THEREOFDecember 2021June 2025Allow4201NoNo
17545664PYRIMIDINE COMPOUND AND MEDICAL USE THEREOFDecember 2021March 2025Abandon4011NoNo
17537298SELECTIVE ANDROGEN RECEPTOR DEGRADER (SARD) LIGANDS AND METHODS OF USE THEREOFNovember 2021June 2024Allow3011NoNo
17609392ACSS2 INHIBITORS AND METHODS OF USE THEREOFNovember 2021June 2025Allow4311NoNo
17497355SUBSTITUTED 1,2-DIHYDRO-3H-PYRAZOLO[3,4-D]PYRIMIDIN-3-ONESOctober 2021February 2025Abandon4011NoNo
17423482PYRROLOPYRIMIDINE DERIVATIVE AND USE THEREOFJuly 2021August 2024Allow3710YesNo
17421303ORGANIC COMPOUNDSJuly 2021April 2025Allow4511YesNo
17359205COMPOUNDS AND METHODS FOR INHIBITING EMT PATHWAYS TO TREAT CANCER, ORGAN FIBROSIS AND METABOLIC DISORDERSJune 2021January 2025Allow4311NoNo
17414408POLYCYCLIC COMPOUND INHIBITING MNK1 AND MNK2June 2021August 2024Allow3810YesNo
17292699COMPOUND INHIBITING YAP-TEAD BINDING, AND PHARMACEUTICAL COMPOSITION FOR PREVENTING OR TREATING CANCER, COMPRISING COMPOUND AS ACTIVE INGREDIENTMay 2021December 2024Abandon4310NoNo
17292363METHODS AND COMBINATIONS FOR TREATMENT AND T CELL MODULATIONMay 2021October 2024Allow4101NoNo
17244767TUBULIN INHIBITORSApril 2021September 2024Allow4110NoNo
17277649INDANE DERIVATIVES FOR USE IN THE TREATMENT OF BACTERIAL INFECTIONMarch 2021January 2025Allow4611NoNo
17270480HIGHLY ACTIVE STING PROTEIN AGONIST COMPOUNDFebruary 2021September 2024Allow4301NoNo
17140789COMPOSITIONS USEFUL IN THERAPY OF AUTOPHAGY-RELATED PATHOLOGIES, AND METHODS OF MAKING AND USING THE SAMEJanuary 2021August 2024Allow4311NoNo
17088613ACSS2 INHIBITORS AND METHODS OF USE THEREOFNovember 2020April 2024Allow4201YesNo
16582510TRICYCLIC COMPOUNDS HAVING ANTIMITOTIC AND/OR ANTITUMOR ACTIVITY AND METHODS OF USE THEREOFSeptember 2019January 2020Allow410NoNo
16465277TUMOR-TREATING PHARMACEUTICAL COMPOSITIONMay 2019June 2020Allow1310YesNo
16401834COMPOUNDS AND COMPOSITIONS FOR IMMUNOTHERAPYMay 2019April 2020Allow1101YesNo
16376858NOVEL COMPOUNDS AS REARRANGED DURING TRANSFECTION (RET) INHIBITORSApril 2019March 2020Allow1110NoNo
16370857COMPOSITIONS AND METHODS FOR INHIBITING ARGINASE ACTIVITYMarch 2019October 2019Allow700NoNo
16294372Pyrazolo[4,3-d]pyrimidines as Antitumor AgentsMarch 2019January 2020Allow1101NoNo
16324189HETEROCYCLIC COMPOUNDS AS FGFR INHIBITORSFebruary 2019June 2020Allow1601YesNo
16246745TRICYCLIC COMPOUNDS HAVING CYTOSTATIC AND/OR CYTOTOXIC ACTIVITY AND METHODS OF USE THEREOFJanuary 2019January 2020Allow1211YesNo
16243782COVALENT INHIBITORS OF CDK-7January 2019June 2019Allow500NoNo
16145271NOVEL COMPOUNDS AS REARRANGED DURING TRANSFECTION (RET) INHIBITORSSeptember 2018January 2019Allow300NoNo
16079764NEW CRYSTALLINE FORMS OF (6-(1H-INDAZOL-6-YL)-N-[4-(4-MORPHOLINYL)PHENYL]IMIDAZO[1,2-A]PYRAZIN-8-AMINE) METHANESULFONATEAugust 2018July 2019Allow1110YesNo
16101250(AZA)PYRIDOPYRAZOLOPYRIMIDINONES AND INDAZOLOPYRIMIDINONES AND THEIR USEAugust 2018January 2020Allow1711NoNo
16072116PYRROLOBENZODIAZEPINESJuly 2018April 2019Allow900NoNo
15993937TRICYCLIC COMPOUNDS HAVING ANTIMITOTIC AND/OR ANTITUMOR ACTIVITY AND METHODS OF USE THEREOFMay 2018June 2019Allow1310NoNo
15763389BICYCLIC COMPOUND AND USE THEREOF FOR INHIBITING SUV39H2March 2018August 2019Allow1611NoNo
15759950MODULATORS OF INDOLEAMINE 2,3-DIOXYGENASEMarch 2018March 2019Allow1210NoNo
15756366SUBSTITUTED 1,2-DIHYDRO-3H-PYRROLO[1,2-c]IMIDAZOL-3-ONE ANTIBACTERIAL COMPOUNDSFebruary 2018January 2019Allow1110NoNo
15903285INHIBITORS OF BRUTON'S TYROSINE KINASEFebruary 2018March 2019Allow1311NoNo
15753264HIV-1 PROTEASE INHIBITORS AND USES THEREOFFebruary 2018July 2019Allow1611NoNo
15749950Benzodiazepines as bromodomain inhibitorsFebruary 2018August 2018Allow600NoNo
15877524NOVEL COMPOUNDS AS REARRANGED DURING TRANSFECTION (RET) INHIBITORSJanuary 2018June 2018Allow501NoNo
15746617COMPOUND HAVING EP2 AGONIST ACTIVITYJanuary 2018May 2019Allow1611YesNo
15841002TRICYCLIC COMPOUND AND JAK INHIBITORDecember 2017April 2019Allow1621NoNo
15801192PYRIDAZINE DERIVATIVES AS RORc MODULATORSNovember 2017December 2018Allow1401YesNo
15795801TRICYCLIC COMPOUNDS HAVING ANTIMITOTIC AND/OR ANTITUMOR ACTIVITY AND METHOD OF USE THEREOFOctober 2017April 2019Allow1811NoNo
15719924HESPERETIN AZA-CINNAMIC ACID DERIVATIVES WITH ANTI-TUMOR ACTIVITIES AND A METHOD OF PREPARING THE SAMESeptember 2017July 2018Allow901NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner LEESER, ERICH A.

Strategic Value of Filing an Appeal

Total Appeal Filings
11
Allowed After Appeal Filing
2
(18.2%)
Not Allowed After Appeal Filing
9
(81.8%)
Filing Benefit Percentile
19.1%
Lower than average

Understanding Appeal Filing Strategy

Filing a Notice of Appeal can sometimes lead to allowance even before the appeal is fully briefed or decided by the PTAB. This occurs when the examiner or their supervisor reconsiders the rejection during the mandatory appeal conference (MPEP § 1207.01) after the appeal is filed.

In this dataset, 18.2% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is in the bottom 25% across the USPTO, indicating that filing appeals is less effective here than in most other areas.

Strategic Recommendations

Filing a Notice of Appeal shows limited benefit. Consider other strategies like interviews or amendments before appealing.

Examiner LEESER, ERICH A - Prosecution Strategy Guide

Executive Summary

Examiner LEESER, ERICH A works in Art Unit 1622 and has examined 696 patent applications in our dataset. With an allowance rate of 81.2%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 26 months.

Allowance Patterns

Examiner LEESER, ERICH A's allowance rate of 81.2% places them in the 45% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by LEESER, ERICH A receive 1.04 office actions before reaching final disposition. This places the examiner in the 14% percentile for office actions issued. This examiner issues significantly fewer office actions than most examiners.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by LEESER, ERICH A is 26 months. This places the examiner in the 59% percentile for prosecution speed. Prosecution timelines are slightly faster than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +20.8% benefit to allowance rate for applications examined by LEESER, ERICH A. This interview benefit is in the 69% percentile among all examiners. Recommendation: Interviews provide an above-average benefit with this examiner and are worth considering.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 44.7% of applications are subsequently allowed. This success rate is in the 95% percentile among all examiners. Strategic Insight: RCEs are highly effective with this examiner compared to others. If you receive a final rejection, filing an RCE with substantive amendments or arguments has a strong likelihood of success.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 69.2% of cases where such amendments are filed. This entry rate is in the 89% percentile among all examiners. Strategic Recommendation: This examiner is highly receptive to after-final amendments compared to other examiners. Per MPEP § 714.12, after-final amendments may be entered "under justifiable circumstances." Consider filing after-final amendments with a clear showing of allowability rather than immediately filing an RCE, as this examiner frequently enters such amendments.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 0.0% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 0% percentile among all examiners. Note: Pre-appeal conferences show limited success with this examiner compared to others. While still worth considering, be prepared to proceed with a full appeal brief if the PAC does not result in favorable action.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 100.0% of appeals filed. This is in the 84% percentile among all examiners. Of these withdrawals, 81.8% occur early in the appeal process (after Notice of Appeal but before Appeal Brief). Strategic Insight: This examiner frequently reconsiders rejections during the appeal process compared to other examiners. Per MPEP § 1207.01, all appeals must go through a mandatory appeal conference. Filing a Notice of Appeal may prompt favorable reconsideration even before you file an Appeal Brief.

Petition Practice

When applicants file petitions regarding this examiner's actions, 37.7% are granted (fully or in part). This grant rate is in the 35% percentile among all examiners. Strategic Note: Petitions show below-average success regarding this examiner's actions. Ensure you have a strong procedural basis before filing.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 10.5% of allowed cases (in the 96% percentile). Per MPEP § 1302.04, examiner's amendments are used to place applications in condition for allowance when only minor changes are needed. This examiner frequently uses this tool compared to other examiners, indicating a cooperative approach to getting applications allowed. Strategic Insight: If you are close to allowance but minor claim amendments are needed, this examiner may be willing to make an examiner's amendment rather than requiring another round of prosecution.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 5.7% of allowed cases (in the 81% percentile). Per MPEP § 714.14, a Quayle action indicates that all claims are allowable but formal matters remain. This examiner frequently uses Quayle actions compared to other examiners, which is a positive indicator that once substantive issues are resolved, allowance follows quickly.

Prosecution Strategy Recommendations

Based on the statistical analysis of this examiner's prosecution patterns, here are tailored strategic recommendations:

  • Consider after-final amendments: This examiner frequently enters after-final amendments. If you can clearly overcome rejections with claim amendments, file an after-final amendment before resorting to an RCE.
  • RCEs are effective: This examiner has a high allowance rate after RCE compared to others. If you receive a final rejection and have substantive amendments or arguments, an RCE is likely to be successful.
  • Appeal filing as negotiation tool: This examiner frequently reconsiders rejections during the appeal process. Filing a Notice of Appeal may prompt favorable reconsideration during the mandatory appeal conference.
  • Examiner cooperation: This examiner frequently makes examiner's amendments to place applications in condition for allowance. If you are close to allowance, the examiner may help finalize the claims.

Relevant MPEP Sections for Prosecution Strategy

  • MPEP § 713.10: Examiner interviews - available before Notice of Allowance or transfer to PTAB
  • MPEP § 714.12: After-final amendments - may be entered "under justifiable circumstances"
  • MPEP § 1002.02(c): Petitionable matters to Technology Center Director
  • MPEP § 1004: Actions requiring primary examiner signature (allowances, final rejections, examiner's answers)
  • MPEP § 1207.01: Appeal conferences - mandatory for all appeals
  • MPEP § 1214.07: Reopening prosecution after appeal

Important Disclaimer

Not Legal Advice: The information provided in this report is for informational purposes only and does not constitute legal advice. You should consult with a qualified patent attorney or agent for advice specific to your situation.

No Guarantees: We do not provide any guarantees as to the accuracy, completeness, or timeliness of the statistics presented above. Patent prosecution statistics are derived from publicly available USPTO data and are subject to data quality limitations, processing errors, and changes in USPTO practices over time.

Limitation of Liability: Under no circumstances will IronCrow AI be liable for any outcome, decision, or action resulting from your reliance on the statistics, analysis, or recommendations presented in this report. Past prosecution patterns do not guarantee future results.

Use at Your Own Risk: While we strive to provide accurate and useful prosecution statistics, you should independently verify any information that is material to your prosecution strategy and use your professional judgment in all patent prosecution matters.