USPTO Examiner CHEN PO CHIH - Art Unit 1621

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18755058PCNA INHIBITORSJune 2024July 2025Allow1210NoNo
186067783-(3-FLUOROPHENYL)-5-(4-METHOXYBENZYLTHIO)-4-PHENYL-4H-1,2,4-TRIAZOLE AS AN ANTIMICROBIAL COMPOUNDMarch 2024December 2024Allow911NoNo
18423156CARDIAC SARCOMERE INHIBITORSJanuary 2024December 2024Allow1110NoNo
18420478ISOXAZOLE DERIVATIVES AS NUCLEAR RECEPTOR AGONISTS AND USES THEREOFJanuary 2024February 2025Abandon1310NoNo
18526028ELECTROPHILIC NITROALKENE BENZOIC ACID DERIVATES AS THERAPEUTIC DRUGS IN AMYOTROPHIC LATERAL SCLEROSIS (ALS) AND OTHER NEURODEGENERATIVE CONDITIONSDecember 2023April 2025Abandon1610NoNo
18522995HETEROARYL-BIPHENYL AMINES FOR THE TREATMENT OF PD-L1 DISEASESNovember 2023April 2025Allow1620NoNo
183828123-(3-FLUOROPHENYL)-5-(4-METHOXYBENZYLTHIO)-4-PHENYL-4H-1,2,4-TRIAZOLE AS AN ANTIMICROBIAL COMPOUNDOctober 2023August 2024Abandon1011NoNo
18381291ETHYL 6-(5-(3-FLUOROPHENYL)-4-PHENYL-4H-1,2,4-TRIAZOL-3-YLTHIO)HEXANOATE AS AN ANTIMICROBIAL COMPOUNDOctober 2023February 2024Allow301NoNo
18381069ETHYL {[4-BENZOYL-5-(3-FLUOROPHENYL)-4H-1,2,4-TRIAZOL-3-YL]THIO}ACETATE AS AN ANTIMICROBIAL COMPOUNDOctober 2023March 2024Allow501NoNo
18370519PHARMACEUTICAL COMPOSITIONS COMPRISING WRN HELICASE INHIBITORSSeptember 2023September 2024Allow1221NoNo
18108045BRM TARGETING COMPOUNDS AND ASSOCIATED METHODS OF USEFebruary 2023March 2025Abandon2511NoNo
181033718-Amino-2-Oxo-1,3-Diaza-Spiro-[4.5]-Decane DerivativesJanuary 2023December 2024Abandon2210NoNo
181033193-(Carboxymethyl)-8-Amino-2-Oxo-1,3-Diaza-Spiro-[4.5]-Decane DerivativesJanuary 2023December 2024Abandon2210NoNo
181029833-(Carboxyethyl)-8-Amino-2-Oxo-1,3-Diaza-Spiro-[4.5]-Decane DerivativesJanuary 2023November 2024Abandon2110NoNo
181031803-((Hetero-)Aryl)-Alkyl-8-Amino-2-Oxo-1,3-Diaza-Spiro-[4.5]-Decane DerivativesJanuary 2023December 2024Abandon2210NoNo
18154520BENZOATE DERIVATIVESJanuary 2023April 2024Allow1511NoNo
18078630DISELENIDE-BASED ORGANIC PROTECTIVE FILMSDecember 2022October 2023Allow1021NoNo
18062959ORGANIC PHOTOELECTRIC CONVERSION ELEMENT, IMAGE PICKUP ELEMENT, AND IMAGE PICKUP APPARATUSDecember 2022May 2025Abandon2911NoNo
179862073-((Hetero-)Aryl)-8-Amino-2-Oxo-1,3-Diaza-Spiro-[4.5]-Decane DerivativesNovember 2022September 2024Abandon2210NoNo
17982664FORMS AND COMPOSITIONS OF INHIBITORS OF JAK2November 2022July 2024Allow2121NoNo
17978848SOLID FORMS OF(Z)-4-(5-((3-BENZYL-4-OXO-2-THIOXOTHIAZOLIDIN-5-YLIDENE)METHYL)FURAN-2-YL)BENZOIC ACIDNovember 2022October 2024Allow2420NoNo
18045390STAT DEGRADERS AND USES THEREOFOctober 2022January 2023Allow300NoNo
17939512PIPERAZINE AND PIPERIDINE DERIVATIVES, THEIR SYNTHESIS AND USE THEREOF IN INHIBITING VDAC OLIGOMERIZATION, APOPTOSIS AND MITOCHONDRIA DYSFUNCTIONSeptember 2022May 2023Abandon801NoNo
17889047ESTERS OF A RETINOID AND A TOCOPHEROL OR TERT-BUTYLHYDROQUINONE AND PREPARATIONS THEREOFAugust 2022February 2025Abandon3021NoNo
17884292ISOTHIOCYANATE FUNCTIONAL SURFACTANTS, FORMULATIONS INCORPORATING THE SAME, AND ASSOCIATED METHODS OF USEAugust 2022June 2025Allow3511NoNo
17875982IONIZABLE LIPIDOIDS AND THEIR USESJuly 2022June 2024Allow2210NoNo
17862071LIPIDS FOR LIPID NANOPARTICLE DELIVERY OF ACTIVE AGENTSJuly 2022June 2024Allow2410NoNo
17849949Cytotoxic Actin-Targeting CompoundsJune 2022November 2024Allow2820NoNo
17807389METHODS FOR PREPARING SUBSTITUTED CHROMANONE DERIVATIVESJune 2022July 2024Allow2510NoNo
17830158ANTI-VIRAL DRUGJune 2022November 2024Allow3011NoNo
17780047CANNABIGEROL DERIVATIVES AND USE THEREOF AS CANNABINOID RECEPTOR MODULATORSMay 2022April 2024Allow2320NoNo
17752649BICYCLIC COMPOUNDSMay 2022April 2024Allow2310NoNo
17662246INDOLE AHR INHIBITORS AND USES THEREOFMay 2022April 2024Allow2310NoNo
17738166PROTEIN COMPLEX COMPRISING NON-PEPTIDYL POLYMER-COUPLED FATTY ACID DERIVATIVE COMPOUND AS LINKER AND PREPARATION METHOD THEREFORMay 2022March 2025Allow3530YesNo
17736669STAT DEGRADERS AND USES THEREOFMay 2022April 2024Allow2310NoNo
177327247,8-DIHYDROBENZO[E]PYRIDO[3,4-C]AZOCINE-2,5(3H,6H)-DIONE DERIVATIVES USEFUL AS A FACTOR XIA INHIBITORSApril 2022September 2023Allow1710NoNo
17661182HETERO-BICYCLIC INHIBITORS OF KRASApril 2022June 2023Allow1421NoYes
17730948PCNA INHIBITORSApril 2022March 2024Allow2310NoNo
17729652COMPOSITIONS AND METHODS FOR TREATING AN INFECTIONApril 2022April 2024Allow2401NoNo
17704892MODULATORS OF SESTRIN-GATOR2 INTERACTION AND USES THEREOFMarch 2022April 2025Allow3630NoNo
17654547Bromodomain InhibitorsMarch 2022June 2024Abandon2710NoNo
17687188CHEMICAL COMPOUNDSMarch 2022June 2024Abandon2710NoNo
17685778CARDIAC SARCOMERE INHIBITORSMarch 2022September 2023Allow1910NoNo
17668519PHARMACEUTICAL COMPOSITIONS OF FUROSEMIDE AND USES THEREOFFebruary 2022February 2025Allow3610NoNo
17587304USE OF SMALL MOLECULE INHIBITORS TO KLF10 FOR MODULATION OF T REGULATORY CELLS AND CANCER IMMUNOTHERAPYJanuary 2022May 2025Allow4021NoNo
17575080COMPOSITIONS AND METHODS RELATING TO NOVEL SULFONO-gamma-AA PEPTIDESJanuary 2022August 2024Allow3121NoNo
17556188TREATMENT OF C3 GLOMERULOPATHY USING A C5A INHIBITORDecember 2021May 2024Abandon2820NoNo
17595819FUSED HETEROCYCLE DERIVATIVES AS CAPSID ASSEMBLY MODULATORSNovember 2021April 2025Abandon4000NoNo
17595537AZEPINES AS HBV CAPSID ASSEMBLY MODULATORSNovember 2021April 2025Abandon4100NoNo
174527861-HETEROCYCLYL ISOCHROMANYL COMPOUNDS AND ANALOGS FOR TREATING CNS DISORDERSOctober 2021May 2024Allow3010NoNo
17605750PHARMACEUTICAL COMPOUNDS AND THERAPEUTIC METHODSOctober 2021December 2024Allow3810NoNo
17506614DUAL-RESPONSIVE NANOPARTICLES FOR ENHANCED ANTIBACTERIAL EFFICACYOctober 2021April 2025Allow4211NoNo
17499433RAPAMYCIN DERIVATIVESOctober 2021March 2024Allow2910NoNo
17442206NOVEL DEPSIDE DIMERIC COMPOUNDS FOR SKELETAL MUSCLE MODULATION, METHODS AND USES THEREOFSeptember 2021February 2025Abandon4001NoNo
17480424ENZYME INHIBITORSSeptember 2021February 2025Abandon4101NoNo
17479438ASYMMETRIC METAL COMPLEX AS AN ACTIVE MATERIAL OF A FLOW BATTERYSeptember 2021September 2024Allow3621NoNo
17475733HETEROCYCLIC COMPOUNDSeptember 2021April 2025Allow4330NoNo
17474482NOVEL CELL-PERMEABLE SUCCINATE COMPOUNDSSeptember 2021January 2025Allow4021YesNo
17472371HUMAN TLR8-SELECTIVE AGONISTSSeptember 2021August 2024Allow3520NoNo
17469535CRYSTALLINE FORMS OF A MAGL INHIBITORSeptember 2021January 2024Allow2810NoNo
17458021COPPER COMPLEXES FOR TREATMENT OF NEURODEGENERATIVE DISORDERSAugust 2021January 2024Allow2911NoNo
17408792TOPICAL FORMULATIONS AND TREATMENTSAugust 2021January 2025Allow4131NoNo
17394630PRODRUGS OF PHOSPHONAMIDE NUCLEOTIDE ANALOGUES AND THEIR PHARMACEUTICAL USEAugust 2021April 2024Allow3321NoNo
17382901PKC INHIBITOR SOLID STATE FORMSJuly 2021June 2025Allow4711YesNo
173786962-AMINOSELENOPHEN COMPOUNDS WITH ANTI-DRUG RESISTANT BACTERIA ACTIVITY AND A METHOD OF PREPARING THE SAMEJuly 2021September 2023Abandon2621NoNo
17376522COMPOUNDS FOR THE TREATMENT OF CLOSTRIDIUM DIFFICILE INFECTIONJuly 2021March 2024Allow3230NoNo
17363841PRODUCTION OF NITROGEN-CONTAINING CHELATORSJune 2021December 2023Abandon2901NoNo
17346726Treatment of inflammation initiated by the spinal cord injury, the traumatic brain injury, stroke, in inhibition of cerebral and spinal cord edema and of inflammation in neurodegenerative, immune mediated and infectious diseases of the central nervous system.June 2021February 2024Abandon3212YesNo
17298540DOCK1-INHIBITING COMPOUND AND USE THEREOFMay 2021September 2024Abandon3901NoNo
17244172SYSTEMS AND METHODS FOR PRODUCING NITRILESApril 2021December 2024Allow4321NoNo
17239064SYSTEMS AND METHODS FOR PRODUCING NITRILESApril 2021January 2025Abandon4521YesNo
17301941AGGREGATION-INDUCED EMISSION LUMINOGENS USEFUL FOR CANCER CELL DISCRIMINATION AND MONITORINGApril 2021January 2024Allow3311NoNo
17226004CFTR REGULATORS AND METHODS OF USE THEREOFApril 2021May 2025Allow4950NoNo
17208964ANTIVIRAL COMPOUNDSMarch 2021January 2024Abandon3411NoNo
17208919AGONISTS OF THE APELIN RECEPTOR AND METHODS OF USE THEREOFMarch 2021February 2025Allow4741YesNo
17191806ISOXAZOLE DERIVATIVES AS NUCLEAR RECEPTOR AGONISTS AND USES THEREOFMarch 2021October 2023Allow3220NoNo
17249489Oral Care Composition Containing Cetylpyridinium TetrachlorozincateMarch 2021November 2024Abandon4521NoNo
17191552BIOACTIVE POLYMERS WITH ANTI=FOULING PROPERTIES FOR MEDICAL AND DENTAL USESMarch 2021July 2024Abandon4121NoNo
17188625AMORPHOUS FORMS OF SELINEXOR AND PROCESS FOR THEIR PREPARATIONMarch 2021July 2023Abandon2811NoNo
17176847FLUOROGENIC CYANINE COMPOUNDS FOR DETECTING NUCLEIC ACIDSFebruary 2021July 2024Allow4121NoNo
17173884NOVEL OXABOROLE ANALOGS AND USES THEREOFFebruary 2021February 2023Allow2420NoNo
17265993FUNGICIDAL MIXTURES FOR SOYBEAN DISEASESFebruary 2021January 2025Abandon4711NoNo
17159485GLP-1R MODULATING COMPOUNDSJanuary 2021August 2024Allow4341NoNo
17157733ANTIVIRAL COMPOUNDSJanuary 2021May 2023Allow2711NoNo
17145453FLUORINATED 2-AMINO-4-(SUBSTITUTED AMINO)PHENYL CARBAMATE DERIVATIVESJanuary 2021August 2023Allow3111NoNo
17130022SUBSTITUTED BICYCLIC COMPOUNDS USEFUL AS T CELL ACTIVATORSDecember 2020November 2023Allow3521NoNo
17255371INTERMEDIATES IN THE SYNTHESIS OF C3-SUBSTITUTED CEPHALOSPORINSDecember 2020August 2023Allow3221NoNo
17120217Advanced Formulations and Therapies for Treating Hard-to-Heal WoundsDecember 2020April 2025Abandon5311NoNo
16973587CHEMICAL COMPOUNDSDecember 2020March 2024Abandon4001NoNo
17111339ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAMEDecember 2020March 2023Allow2801NoNo
17058035METHOD FOR PRODUCING SUBSTITUTED N-ARYL PYRAZOLESNovember 2020February 2024Abandon3921NoNo
17056267IMIDAZO-PYRAZOLE CARBOXAMIDE DERIVATIVES AS ANTICANCER AGENTS AND THE SYNTHESIS THEREOFNovember 2020March 2024Abandon4001NoNo
17096721CRYSTALLINE FORMS OF A MAGL INHIBITORNovember 2020January 2023Allow2710NoNo
17054322AGGRESSIVE LIPID LOWERING THERAPY IN CORONARY ARTERY DISEASENovember 2020August 2024Abandon4511NoNo
17091247INHIBITORS OF NHR2 AND/OR RUNX1/ETO-TETRAMERIZATIONNovember 2020June 2024Abandon4331NoNo
17083895PHARMACEUTICAL COMPOSITION FOR PREVENTING OR TREATING CANCER COMPRISING KSP INHIBITOR AND MITOSIS INHIBITOROctober 2020October 2024Allow4721NoNo
17080523ELECTROPHILIC NITROALKENE BENZOIC ACID DERIVATES AS THERAPEUTIC DRUGS IN AMYOTROPHIC LATERAL SCLEROSIS (ALS) AND OTHER NEURODEGENERATIVE CONDITIONSOctober 2020December 2023Abandon3721NoNo
17073603METHODS FOR ENHANCING CELLULAR CLEARANCE OF PATHOLOGICAL MOLECULES VIA ACTIVATION OF THE CELLULAR PROTEIN YKT6October 2020October 2024Allow4822NoNo
17071056HETEROARYL-BIPHENYL AMINES FOR THE TREATMENT OF PD-L1 DISEASESOctober 2020August 2023Allow3421NoNo
17070620USE OF FAVIPIRAVIR IN TREATMENT OF CORONAVIRUS INFECTIONOctober 2020June 2023Abandon3201NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner CHEN, PO-CHIH.

Strategic Value of Filing an Appeal

Total Appeal Filings
1
Allowed After Appeal Filing
1
(100.0%)
Not Allowed After Appeal Filing
0
(0.0%)
Filing Benefit Percentile
95.3%
Higher 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, 100.0% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is in the top 25% across the USPTO, indicating that filing appeals is particularly effective here. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Strategic Recommendations

Filing a Notice of Appeal is strategically valuable. The act of filing often prompts favorable reconsideration during the mandatory appeal conference.

Examiner CHEN, PO-CHIH - Prosecution Strategy Guide

Executive Summary

Examiner CHEN, PO-CHIH works in Art Unit 1621 and has examined 236 patent applications in our dataset. With an allowance rate of 80.1%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 32 months.

Allowance Patterns

Examiner CHEN, PO-CHIH's allowance rate of 80.1% places them in the 43% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by CHEN, PO-CHIH receive 1.93 office actions before reaching final disposition. This places the examiner in the 62% percentile for office actions issued. This examiner issues a slightly above-average number of office actions.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by CHEN, PO-CHIH is 32 months. This places the examiner in the 30% percentile for prosecution speed. Prosecution timelines are slightly slower than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +10.4% benefit to allowance rate for applications examined by CHEN, PO-CHIH. This interview benefit is in the 47% percentile among all examiners. Recommendation: Interviews provide a below-average benefit with this examiner.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 23.9% of applications are subsequently allowed. This success rate is in the 24% percentile among all examiners. Strategic Insight: RCEs show lower effectiveness with this examiner compared to others. Consider whether a continuation application might be more strategic, especially if you need to add new matter or significantly broaden claims.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 52.8% of cases where such amendments are filed. This entry rate is in the 74% percentile among all examiners. Strategic Recommendation: This examiner shows above-average receptiveness to after-final amendments. If your amendments clearly overcome the rejections and do not raise new issues, consider filing after-final amendments before resorting to an RCE.

Pre-Appeal Conference Effectiveness

When applicants request a pre-appeal conference (PAC) with this examiner, 200.0% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 92% percentile among all examiners. Strategic Recommendation: Pre-appeal conferences are highly effective with this examiner compared to others. Before filing a full appeal brief, strongly consider requesting a PAC. The PAC provides an opportunity for the examiner and supervisory personnel to reconsider the rejection before the case proceeds to the PTAB.

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, 100.0% 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, 42.1% are granted (fully or in part). This grant rate is in the 43% 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 0.0% of allowed cases (in the 0% percentile). This examiner rarely makes examiner's amendments compared to other examiners. You should expect to make all necessary claim amendments yourself through formal amendment practice.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 13.8% of allowed cases (in the 90% 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:

  • Request pre-appeal conferences: PACs are highly effective with this examiner. Before filing a full appeal brief, request a PAC to potentially resolve issues without full PTAB review.
  • 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.

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.