USPTO Examiner BRANCH CATHERINE S - Art Unit 1763

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18914375PARTICLE SIZE CONTROL OF SILYL CHROMATE CATALYSTS AND USES THEREOF IN FLUIDIZED BED REACTORSOctober 2024November 2025Allow1330YesNo
18765315BINDER COMPOSITION AND SEPARATOR CONTAINING SAMEJuly 2024January 2025Allow610YesNo
18720968EVOLVING RANDOM HETEROPOLYMERS TOWARDS CATALYTICALLY ACTIVE MATERIALSJune 2024October 2024Allow400NoNo
18738620THIOANION-FUNCTIONALIZED POLYPYRROLES FOR METAL ION CAPTUREJune 2024July 2025Allow1310NoNo
18653014PARTICLE SIZE CONTROL OF SILYL CHROMATE CATALYSTS AND USES THEREOF IN FLUIDIZED BED REACTORSMay 2024February 2025Allow911NoNo
18647691PROCESSES TO PRODUCE POLY ALPHA-OLEFIN TRIMER AND APPARATUS THEREFORApril 2024August 2025Allow1610YesNo
18645497METHOD FOR MAKING PHOTOCHROMIC CONTACT LENSESApril 2024November 2024Allow700NoNo
18590881ASPHALTENE DISPERSION STABILIZER AND PREPARATION METHOD THEREFORFebruary 2024July 2024Allow510NoNo
18409187FLAME RESISTANT BUILD MATERIALS AND ASSOCIATED PRINTED 3D ARTICLESJanuary 2024January 2025Allow1310NoNo
18575951COMPOUND, THIN-FILM FORMING RAW MATERIAL, THIN-FILM, AND METHOD OF PRODUCING THIN-FILMJanuary 2024January 2026Allow2421NoNo
18569117HIGH PERFORMANCE BINDERS FOR LITHIUM BATTERY ELECTRODESDecember 2023October 2025Allow2221NoNo
18516217PROCESS FOR INTRODUCING CATALYST IN A POLYMERIZATION PROCESSNovember 2023October 2025Allow2330NoNo
18511083METHOD FOR PRODUCING POLYMER USED AS BASE FILM FOR CELL CULTURE, AND CELL CULTURE CONTAINERNovember 2023February 2025Allow1510NoNo
18560931PREPARATION METHOD FOR AMPHIPHILIC NANOSHEETNovember 2023July 2024Allow810YesNo
18485443LONG-CHAIN BRANCHED PROPYLENE POLYMER COMPOSITIONOctober 2023February 2025Allow1610NoNo
18471482FLUORORESIN, FLUORORESIN PARTICLES, AND METHODS FOR PRODUCING THESESeptember 2023December 2024Allow1400YesNo
18471794FLUORORESIN, FLUORORESIN PARTICLES, AND METHODS FOR PRODUCING THESESeptember 2023November 2025Allow2611NoNo
18449133PREPARATION OF METALLOCENE CONTAINING CATIONIC POLYMERS FOR ANION EXCHANGE APPLICATIONSAugust 2023March 2026Allow3130NoNo
18356285CHROMIUM-ON-SILICA CATALYSTS AND METHODS OF MAKING THE SAMEJuly 2023January 2025Allow1821NoNo
18217813QUAD-POLYMER PRECURSOR FOR PRODUCING CARBON FIBER, METHOD FOR PRODUCING SAME AND METHOD FOR USING SAMEJuly 2023February 2024Allow700NoNo
18217822QUAD-POLYMER PRECURSOR FOR PRODUCING CARBON FIBER, METHOD FOR PRODUCING SAME AND METHOD FOR USING SAMEJuly 2023January 2024Allow700NoNo
18329633METHOD OF 3D PRINTING, AND RESULTING ARTICLE HAVING POROUS STRUCTUREJune 2023July 2024Allow1411YesNo
18196579FLUOROALKYL TRIS(DIALKYLAMINO) TIN COMPOUNDS AND METHODS FOR PREPARATION THEREOFMay 2023November 2025Abandon3011NoNo
18315056SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATIONMay 2023August 2024Allow1520NoNo
18315116SOLID CATALYST COMPONENT FOR OLEFIN POLYMERIZATIONMay 2023April 2024Allow1110NoNo
18143562CHALCOGENIDE HYBRID INORGANIC/ORGANIC POLYMERS (CHIPS) FOR INFRARED OPTICAL MATERIALS AND DEVICESMay 2023January 2025Allow2010NoNo
18301895POLYPROPYLENE FILM, METAL LAYER-INTEGRATED POLYPROPYLENE FILM, FILM CAPACITOR AND FILM ROLLApril 2023January 2024Allow900NoNo
18248198CATALYST COMPOSITION FOR POLYMERIZATION OF ALPHA-OLEFIN AND PREPARATION AND USE THEREOFApril 2023September 2025Allow3021NoNo
18194897MIXING CURRENT INTERFACE FOR A POLYMERIZATION ZONE IN AN AUTOCLAVE REACTORApril 2023September 2025Allow3000NoNo
18192298COPOLYMER, INJECTION MOLDED BODY, MEMBER TO BE COMPRESSED, AND COATED ELECTRICAL WIREMarch 2023February 2026Allow3510NoNo
18121964POLYETHYLENE POWDER AND MOLDED ARTICLEMarch 2023November 2025Allow3300NoNo
18024911MULTISTAGE PROCESS FOR PRODUCING POLYMER DISPERSION OF DISCRETE PARTICLESMarch 2023March 2026Allow3620NoNo
18022478SOLID TITANIUM CATALYST COMPONENT, OLEFIN POLYMERIZATION CATALYST, OLEFIN POLYMERIZATION METHOD, AND PROPYLENE POLYMERFebruary 2023September 2025Allow3111NoNo
18111759POLYMERIZATION CATALYST COMPOSITION AND METHOD OF EMPLOYING SAMEFebruary 2023August 2024Allow1820NoNo
18111025PROCESS FOR THE PREPARATION OF AN UHMWPE HOMOPOLYMERFebruary 2023January 2024Allow1110NoNo
18108778AGED LANTHANIDE-BASED CATALYST SYSTEMS AND THEIR USE IN THE PREPARATION OF CIS-1,4-POLYDIENESFebruary 2023April 2025Allow2641NoNo
18096758CATALYTIC POLYMER PROCESSINGJanuary 2023September 2024Allow2021NoNo
18014618CATALYTIC SYSTEM FOR THE STEREOSPECIFIC POLYMERIZATION OF DIENES AND USE THEREOF IN A PROCESS FOR SYNTHESIZING DIENE POLYMERSJanuary 2023January 2025Allow2400NoNo
18013225CROSSLINKED COMPOSITIONS FROM OLEFIN/SILANE INTERPOLYMERSDecember 2022May 2025Allow2910NoNo
18081100MATERIAL FOR FORMING ADHESIVE FILM, PATTERNING PROCESS, AND METHOD FOR FORMING ADHESIVE FILMDecember 2022March 2025Allow2711NoNo
18080175CATALYTIC SYSTEM AND USE THEREOF, AND PREPARATION METHOD OF SYNDIOTACTIC 1,2-POLYBUTADIENE (s-PB)December 2022January 2024Allow1310NoNo
17984026ANTI-BIOFOULING COPOLYMER AND METHOD FOR PREPARING THE SAMENovember 2022September 2023Allow1000NoNo
17998075NORBORNENE ESTERS AS COMONOMERS FOR THERMOSET ARTICLESNovember 2022February 2026Allow3920NoNo
17996971Processes to Produce Poly Alpha-OlefinsOctober 2022September 2025Allow3511NoNo
17919036CYCLOPENTADIENYL/ADAMANTYL PHOSPHINIMINE ZIRCONIUM AND HAFNIUM COMPLEXESOctober 2022September 2025Allow3510NoNo
17963255POLYELECTROLYTE HYDROGEL COATING WITH STRONG SUBSTRATE BINDING PERFORMANCE AND METHOD OF MANUFACTURING THE SAMEOctober 2022October 2025Allow3610NoNo
17917823COMPOSITION COMPRISING A COPOLYMER COMPRISING MONOMERS OF METHYL METHACRYLATE AND METHACRYLIC ACID, ITS USE AND MOULDED OBJECTOctober 2022February 2026Abandon4011NoNo
17907123METHOD FOR PRODUCING FLUORORESINSeptember 2022October 2025Allow3710NoNo
17906941PROCESS FOR THE PREPARATION OF POLYACRYLAMIDES USING AN ECO-FRIENDLY LUBRICANT COMPOSITIONSeptember 2022July 2023Allow1010NoNo
17913142POLYMERIZATION CATALYST HAVING A TETRADENTATE LIGANDSeptember 2022March 2026Allow4220NoNo
17945097Papermaking Agent, Manufacturing Method For Papermaking Agent and PaperSeptember 2022June 2025Allow3321NoNo
17906249Improved Ring Opening Metathesis Catalyst Systems for Cyclic Olefin PolymerizationSeptember 2022June 2025Allow3411NoNo
17941123HOMOLEPTIC LANTHANIDE DEPOSITION PRECURSORSSeptember 2022September 2023Allow1220NoNo
17930839POLYPROPYLENE FILM, METAL LAYER-INTEGRATED POLYPROPYLENE FILM, FILM CAPACITOR AND FILM ROLLSeptember 2022March 2023Allow600NoNo
17930700ENDODONTIC BODIES, SYSTEMS AND METHODS FOR MAKING ENDODONTIC BODIES, AND METHODS OF USING ENDODONTIC BODIESSeptember 2022November 2024Allow2721NoNo
17823523Metal Complexes Comprising Diazabenzmidazolocarbene Ligands and the Use Thereof in OLEDSAugust 2022July 2023Allow1110NoNo
17898626EPDM Terpolymer and Manufacturing Method ThereforAugust 2022December 2022Allow400NoNo
17908110CATALYST AND PREPARATION THEREOFAugust 2022April 2025Allow3210NoNo
17895218METHOD FOR DRYING POLYOLEFIN-CONTAINING PARTICLES AND METHOD FOR STORING POLYOLEFIN-CONTAINING PARTICLESAugust 2022July 2024Allow2211NoNo
17895259METHOD FOR DRYING POLYOLEFIN-CONTAINING PARTICLESAugust 2022January 2024Allow1610NoNo
17796134PREPARATION OF AQUEOUS DISPERSION OF ACRYLATE-SILOXANE COPOLYMER PARTICLESJuly 2022October 2025Abandon3910NoNo
17815492OPTICAL CLEAR RESIN AND DISPLAY DEVICE INCLUDING THE SAMEJuly 2022September 2023Allow1410NoNo
17871363COPOLYMER, FILM COMPOSITION AND COMPOSITE MATERIAL EMPLOYING THE SAMEJuly 2022December 2023Allow1710NoNo
17794312NEODYMIUM-CATALYZED CONJUGATED DIENE-BASED POLYMER AND RUBBER COMPOSITION COMPRISING SAMEJuly 2022January 2026Allow4221YesNo
17792920Catalyst Composition and Method for Preparing Isobutene-Isoprene Copolymer Using the SameJuly 2022March 2025Allow3200NoNo
17791794METHOD FOR PREPARING METALLOCENE SUPPORTED CATALYSTJuly 2022January 2026Allow4210NoNo
17791423Antibacterial PolymerJuly 2022November 2025Allow4000NoNo
17811301POLYACRYLONITRILE (PAN) AND PREPARATION METHOD AND USE THEREOFJuly 2022December 2023Allow1701NoNo
17850521METHODS OF PREPARING A CATALYSTJune 2022September 2022Allow310NoNo
17849364METHOD OF PRODUCING FLUOROPOLYMERJune 2022January 2026Allow4321YesNo
17788856Ethylene/Octene Multi-Block Copolymer and Process for Producing SameJune 2022March 2026Abandon4521NoNo
17788721METHOD FOR MANUFACTURING LOW-MOLECULAR-WEIGHT POLYTETRAFLUOROETHYLENEJune 2022March 2026Allow4511NoNo
17787749POLYMERIZATION PROCESSES FOR THE PRODUCTION OF CIS-1,4-POLYDIENESJune 2022August 2025Allow3720NoNo
17838191Composition of Polymers Derived Through the Maleation of Depolymerized PolypropyleneJune 2022January 2026Allow4410NoNo
17783682METHOD OF PREPARING POLYMERJune 2022March 2025Allow3300NoNo
17783035COMPOSITION COMPRISING A HEMIPEROXYACETAL, METHOD FOR POLYMERIZING SAME, USE THEREOF, AND COMPOSITION MATERIAL OBTAINED UPON POLYMERIZATION OF THE COMPOSITIONJune 2022June 2025Abandon3610NoNo
17782337OPTICAL RESIN COMPOSITION MANUFACTURING METHOD AND OPTICAL RESIN COMPOSITIONJune 2022May 2025Allow3510YesNo
17781952CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINSJune 2022August 2025Abandon3910NoNo
17756795TRANSITION METAL COMPOUND, CATALYST COMPOSITION COMPRISING SAME, AND METHOD FOR PRODUCING OLEFIN POLYMER USING CATALYST COMPOSITIONJune 2022May 2025Allow3601NoNo
17756723METHOD OF MANUFACTURING COPOLYMER RESIN OF DICYCLOPENTADIENE AND VINYL AROMATIC COMPOUNDJune 2022July 2025Abandon3710NoNo
17756524Solution Polymerization Process for Making High-Density Polyethylene with Long-Chain BranchingMay 2022November 2025Abandon4201NoNo
17780177CATALYST FOR THE POLYMERIZATION OF OLEFINSMay 2022March 2024Allow2200YesNo
17825122EPDM Copolymer and Method of Preparing the SameMay 2022April 2024Allow2311NoNo
17751995PROCESS FOR PREPARING POLYPROPYLENE COMPOSITIONMay 2022April 2025Allow3540NoNo
17779526COPOLYMER, MEASURING DEVICE, AND CARRIER FOR MEASUREMENTMay 2022July 2025Abandon3801NoNo
17779406COMPOSITION MADE FROM (METH)ACRYLATE MONOMERSMay 2022September 2024Allow2711NoNo
17778898Ethylene/Alpha-Olefin Copolymer with Excellent Electrical InsulationMay 2022June 2025Allow3710NoNo
17778694PROCESS TO PREPARE A PROCATALYST FOR POLYMERIZATION OF OLEFINSMay 2022December 2025Allow4321NoNo
17748116Preparation of Large Pore Silicas and Uses Thereof in Chromium Catalysts for Olefin PolymerizationMay 2022September 2022Allow400NoNo
17778110PolyolefinMay 2022July 2024Allow2510NoNo
17663991Supported Catalyst Systems and Methods of Using SameMay 2022January 2023Allow810NoNo
17775169COMPOSITION FOR THE IMMEDIATE TERMINATION OF A FREE-RADICAL POLYMERIZATION AND USES THEREOFMay 2022September 2024Allow2811NoNo
17774722EMULSION POLYMERISATIONMay 2022May 2025Allow3610NoNo
17755537Flame-retardant Antimicrobial Agent, Preparation Method therefor and Use thereof, and Flame-retardant Antimicrobial Thermoplastic Resin CompositionApril 2022June 2025Allow3710NoNo
17772258CATALYST FOR OLEFIN POLYMERIZATION AND POLYMERIZATION METHOD USING SAMEApril 2022June 2025Allow3810NoNo
17723661LOOP SLURRY PERIODOGRAM CONTROL TO PREVENT REACTOR FOULING AND REACTOR SHUTDOWNSApril 2022May 2025Allow3700NoNo
17768221Process for Preparing a Hybrid Catalyst for Olefin Polymerization, Hybrid Catalyst for Olefin Polymerization, and PolyolefinApril 2022November 2025Allow4321NoNo
17716170PROCESS FOR REGENERATING A CATALYST FOR THE HYDROFORMYLATION OF OLEFINS IN THE GAS PHASEApril 2022December 2023Allow2010NoNo
17714519ZWITTERIONIC CROSSLINKERS, HYDROGELS COMPRISING ZWITTERIONIC CROSSLINKERS, AND METHODS FOR MAKING AND USINGApril 2022March 2026Allow4821NoNo
17711208PRODUCTION METHOD OF MODIFIED DIENE-BASED POLYMERApril 2022July 2023Allow1610NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner BRANCH, CATHERINE S.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
1
Examiner Affirmed
1
(100.0%)
Examiner Reversed
0
(0.0%)
Reversal Percentile
2.8%
Lower than average

What This Means

With a 0.0% reversal rate, the PTAB affirms the examiner's rejections in the vast majority of cases. This reversal rate is in the bottom 25% across the USPTO, indicating that appeals face significant challenges here.

Strategic Value of Filing an Appeal

Total Appeal Filings
10
Allowed After Appeal Filing
4
(40.0%)
Not Allowed After Appeal Filing
6
(60.0%)
Filing Benefit Percentile
65.1%
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, 40.0% of applications that filed an appeal were subsequently allowed. This appeal filing benefit rate is above the USPTO average, suggesting that filing an appeal can be an effective strategy for prompting reconsideration.

Strategic Recommendations

Appeals to PTAB face challenges. Ensure your case has strong merit before committing to full Board review.

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

Examiner BRANCH, CATHERINE S - Prosecution Strategy Guide

Executive Summary

Examiner BRANCH, CATHERINE S works in Art Unit 1763 and has examined 900 patent applications in our dataset. With an allowance rate of 84.9%, this examiner has an above-average tendency to allow applications. Applications typically reach final disposition in approximately 26 months.

Allowance Patterns

Examiner BRANCH, CATHERINE S's allowance rate of 84.9% places them in the 61% percentile among all USPTO examiners. This examiner has an above-average tendency to allow applications.

Office Action Patterns

On average, applications examined by BRANCH, CATHERINE S receive 1.54 office actions before reaching final disposition. This places the examiner in the 28% percentile for office actions issued. This examiner issues fewer office actions than average, which may indicate efficient prosecution or a more lenient examination style.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by BRANCH, CATHERINE S is 26 months. This places the examiner in the 75% percentile for prosecution speed. Prosecution timelines are slightly faster than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +3.9% benefit to allowance rate for applications examined by BRANCH, CATHERINE S. This interview benefit is in the 27% 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, 34.8% of applications are subsequently allowed. This success rate is in the 77% 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 61.7% of cases where such amendments are filed. This entry rate is in the 87% 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 3% 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 90.9% of appeals filed. This is in the 83% percentile among all examiners. Of these withdrawals, 60.0% 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, 63.4% are granted (fully or in part). This grant rate is in the 68% percentile among all examiners. Strategic Note: Petitions show above-average success regarding this examiner's actions. Petitionable matters include restriction requirements (MPEP § 1002.02(c)(2)) and various procedural issues.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 0.1% of allowed cases (in the 50% percentile). This examiner makes examiner's amendments less often than average. You may need to make most claim amendments yourself.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 2.4% of allowed cases (in the 70% percentile). This examiner issues Quayle actions more often than average when claims are allowable but formal matters remain (MPEP § 714.14).

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.

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.