USPTO Examiner FRONDA CHRISTIAN L - Art Unit 1652

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
18674430INTEGRATED GAS FERMENTATION AND CARBON BLACK PROCESSESMay 2024June 2025Allow1221NoNo
18659585MODIFIED PHI29 DNA POLYMERASES AND USES THEREOFMay 2024November 2024Allow611NoNo
18650206Improved transfection method using a Sleeping Beauty transposase variant with increased solubility that transfects a target cell when used in protein formApril 2024March 2025Allow1121YesNo
18645049METHODS AND COMPOSITIONS FOR TREATMENT OF HUNTER SYNDROME COMPRISING IDURONATE-2-SULFATASEApril 2024February 2025Allow1010NoNo
18632080Methods for Producing a Composition Containing Lipids From Recombinant Algae Having High Lipid ProductivityApril 2024May 2025Allow1320NoNo
18584254BIOFABRICATION OF ADVANCED FUNCTIONAL MATERIALS USING BACTERIAL CELLULOSE SCAFFOLDSFebruary 2024October 2024Allow700NoNo
18581247Method of Manufacturing Sugar Cane Polyvinyl AlcoholFebruary 2024March 2025Allow1311NoNo
18440901Engineered Reverse Transcriptase Enzymes with Enhanced Enzymatic Activity in Nanoliter Reaction VolumesFebruary 2024January 2025Allow1110NoNo
18439199ALGAL STRAIN AND METHODS FOR PRODUCING SIMPLE SUGARSFebruary 2024December 2024Allow1010NoNo
18437294ANIONIC EXCHANGE-HYDROPHOBIC MIXED MODE CHROMATOGRAPHY RESINSFebruary 2024March 2025Allow1311NoNo
18421170PRODUCTION OF FATTY ACYL-COA IN YEAST USING A FATTY ACID FEEDSTOCKJanuary 2024June 2025Allow1720NoNo
18420071Polynucleotides Encoding Engineered Acetate Kinase Variant EnzymesJanuary 2024May 2025Allow1611NoNo
18405043Host Cell Including Expression Vector for Encoding Catalysis Deactivated Angiotensin- Converting Enzyme 2 (ACE2) VariantsJanuary 2024June 2025Allow1721NoNo
18406057BIOSENSORS FOR DETECTING AND/OR NEUTRALIZING BIOAVAILABLE URANIUM AND RELATED U-SENSITIVE GENETIC MOLECULAR COMPONENTS, GENE CASSETTES, VECTORS, GENETIC CIRCUITS, COMPOSITIONS, METHODS AND SYSTEMSJanuary 2024June 2025Allow1811NoNo
18389738SYSTEMS AND METHODS FOR GENETIC ENGINEERING OF A POLYPLOID ORGANISMDecember 2023March 2025Allow1511NoNo
18532727AUTOMATED BIOCONVERSION PROCESS FOR CONTINUOUS AND AUTOMATIC CONTROL FOR CO BIOCONVERSIONSDecember 2023January 2025Allow1320NoNo
18529216METHODS FOR PRODUCING MODIFIED BACTERIA FOR PRODUCTION OF NITROAROMATICSDecember 2023February 2025Allow1420NoNo
18522203METHOD FOR PREPARING (S)-NICOTINE BY REDUCTIONNovember 2023February 2025Allow1410NoNo
18516805YEAST EXPRESSING A HETEROLOGOUS TREHALASE FOR ETHANOL PRODUCTIONNovember 2023May 2025Allow1821NoNo
18515787Compositions for Facilitating the Removal of a FingerprintNovember 2023October 2024Allow1110NoNo
18492525COMPOSITIONS COMPRISING A LOW pH ALPHA-AMYLASE AND A THERMOSTABLE PROTEASE FOR LIQUEFACTIONOctober 2023October 2024Allow1110NoNo
18485955GENERATION OF PEROXYHYDROXYCARBOXYLIC ACID AND THE USE THEREOFOctober 2023March 2025Allow1711NoNo
18484322YEAST EXPRESSING A HETEROLOGOUS PHOSPHOLIPASE FOR ETHANOL PRODUCTIONOctober 2023April 2025Allow1821NoNo
18374536PROCESS FOR THE PREPARATION OF 2,4- OR 2,5-PYRIDINEDICARBOXYLIC ACID AND COPOLYMERS DERIVED THEREFROMSeptember 2023June 2025Allow2121NoNo
18469388POLYPEPTIDES HAVING LYSOZYME ACTIVITY, POLYNUCLEOTIDES ENCODING SAME AND USES AND COMPOSITIONS THEREOFSeptember 2023September 2024Allow1211NoNo
18368369UDP-GLYCOSYLTRANSFERASE VARIANTS AND USES THEREOFSeptember 2023April 2024Allow700NoNo
18465305PROCESSES FOR REDUCING LACTIC ACID IN A BIOFUEL FERMENTATION SYSTEM AND PROCESSES FOR PRODUCING A FERMENTATION PRODUCTSeptember 2023November 2024Allow1420NoNo
18465856METHODS AND COMPOSITIONS OF A FOLLICLE STIMULATING HORMONE RECEPTOR IMMUNORECEPTOR OR CHIMERIC ANTIGEN RECEPTORSeptember 2023June 2025Abandon2111NoNo
18463923Modified Bidirectional Catalase Promoter from BacillusSeptember 2023May 2025Allow2021NoNo
18449107METHODS OF cDNA PREPARATIONAugust 2023October 2024Allow1411NoNo
18348544MODIFIED REVERSE TRANSCRIPTASESJuly 2023October 2024Allow1511YesNo
18217021HETEROLOGOUS EXPRESSION OF SHORT-CHAIN MONOOXYGENASES IN MICROORGANISMSJune 2023June 2025Allow2421NoNo
18344244Food Composition Comprising L-FucoseJune 2023June 2025Allow2421NoNo
18330944SYNTHESIS OF ISOPRENOIDS AND DERIVATIVESJune 2023March 2025Allow2211NoNo
18330457YEAST CELLS GENETICALLY MODIFIED FOR DOWNREGULATION OF PYRUVATE DECARBOXYLASE ACTIVITY AND FBP-SENSITIVE PYRUVATE KINASEJune 2023April 2025Allow2321NoNo
18327433BIOACTIVE PROTEIN-POLYMER COMPOSITIONS FOR STAIN REMOVALJune 2023June 2024Allow1310NoNo
18326495CHEMOAUTOTROPHIC CELLS COMPRISING AN ENGINEERED CARBON FIXATION PATHWAYMay 2023January 2025Abandon2021NoNo
18199575LYSOSOMAL ENZYMES MODIFIED BY CELL BASED GLYCOENGINEERINGMay 2023February 2025Allow2121NoNo
18317588COMPOSITIONS AND METHODS FOR METABOLIC CONTROL OF A BIOFERMENTATION PROCESS WITH SYNTHETIC METABOLIC VALVESMay 2023October 2024Allow1720NoNo
18144378RECOMBINANT HOST CELLS AND METHODS FOR THE PRODUCTION OF ISOBUTYRIC ACIDMay 2023October 2024Abandon1701NoNo
18311592COMPOSITIONS AND METHODS FOR IMPROVING MECHANICAL PROPERTIES OF A TISSUE OR FOR REGENERATING AN INJURED OR DISEASED TISSUEMay 2023January 2025Allow2120NoNo
18141132MICROCROP-DERIVED ELECTROLYTE DRINK, DRIED BASE POWDER, AND MILK, AND METHODS FOR GENERATING THE SAMEApril 2023August 2024Abandon1510NoNo
18302043METHODS OF DECREASING THE GALACTOSE CONTENT OF A RECOMBINANT GLYCOPROTEIN EXPRESSED IN CHO CELLSApril 2023October 2024Allow1821NoNo
18302506STABILIZED ENDOGLUCANASE VARIANTSApril 2023June 2024Allow1411NoNo
18299638WET MILLING PROCESSApril 2023February 2024Allow1110NoNo
18298851Exogenous Ketone Blend Compositions for Delivery of Ketone BodiesApril 2023March 2024Allow1120NoNo
18295101THERMOPHILIC DNA POLYMERASE MUTANTSApril 2023May 2024Abandon1310NoNo
18188061METHODS FOR ORGANIC ACID PRODUCTIONMarch 2023March 2024Allow1211YesNo
18184198METHODS AND COMPOSITIONS FOR PRODUCING VITAMIN K DEPENDENT PROTEINSMarch 2023August 2024Abandon1710NoNo
18180711ENGINEERED PROLINE HYDROXYLASE BIOCATALYSTS FOR HYDROXYLATION OF CHEMICAL COMPOUNDSMarch 2023December 2024Allow2211YesNo
18115846ENABLING CHOLESTEROL CATABOLISM IN MAMMALIAN CELLS LACKING SAMEMarch 2023May 2025Allow2621YesNo
18114051COMPOSITIONS FOR FACILITATING BIOLOGICAL STAIN REMOVALFebruary 2023September 2024Allow1921YesNo
18166975PROCESS OF RECOVERING OILFebruary 2023December 2023Allow1020NoNo
18152329MODIFIED BACTERIA FOR PRODUCTION OF NITROAROMATICSJanuary 2023September 2023Allow800NoNo
18151956HEMP SEED PRODUCTS AND METHODS AND SYSTEMS FOR PRODUCING SAMEJanuary 2023February 2024Allow1321NoNo
18059929Chromatographic Methods for Purification of Proteins from PlasmaNovember 2022September 2023Allow920NoNo
18058283ACID-ALPHA GLUCOSIDASE VARIANTS AND USES THEREOFNovember 2022February 2025Allow2721NoNo
18054917Microorganisms and methods for producing cannabinoids and cannabinoid derivativesNovember 2022July 2024Allow2011NoNo
17985821Using Proteases to Control Star Activity of Restriction EnzymesNovember 2022June 2023Allow811NoNo
18052410GENE DUPLICATIONS FOR CRABTREE-WARBURG-LIKE AEROBIC XYLOSE FERMENTATIONNovember 2022March 2024Allow1701NoNo
18052442COMPOSITIONS COMPRISING IDURONATE-2-SULFATASENovember 2022May 2024Abandon1910NoNo
18052080PROCESSES FOR PRODUCING ETHANOLNovember 2022August 2023Allow910NoNo
17962229BIDIRECTIONAL MULTI-ENZYMATIC SCAFFOLDS FOR BIOSYNTHESIZING CANNABINOIDSOctober 2022April 2025Allow3021NoNo
17938508MODIFIED POLYPEPTIDE WITH ATTENUATED ACTIVITY OF CITRATE SYNTHASE AND METHOD FOR PRODUCING L-AMINO ACID USING THE SAMEOctober 2022February 2023Allow400NoNo
17917179ENZYMATIC DEGRADATION OF PLASTIC POLYALKENE POLYMERS BY KATG ENZYMEOctober 2022March 2025Abandon2901NoNo
17936816POLYMERASE VARIANTS FOR TEMPLATE-INDEPENDENT ENZYMATIC NUCLEIC ACIDS SYNTHESIS AND KIT COMPRISING THE SAMESeptember 2022July 2024Allow2121YesNo
17907538METHOD FOR PRODUCING RECOMBINANT HYALURONIDASESeptember 2022April 2024Allow1911NoNo
17934465PROCESS OF RECOVERING OILSeptember 2022November 2023Allow1421NoNo
17933675ENZYME COMPLEX FOR DECOMPOSING POLYETHYLENE TEREPHTHALATE AND MANUFACTURING METHOD THEREOFSeptember 2022March 2024Allow1811NoNo
17823066Catalysis deactivated angiotensin-converting enzyme 2 (ACE2) variants and their usesAugust 2022October 2023Allow1321NoNo
17822547Methods for Producing Designer Esters and Assessing Alcohol Acyltransferase Specificity for Ester BiosynthesisAugust 2022December 2024Allow2821YesNo
17817801MODIFIED SLEEPING BEAUTY TRANSPOSASE POLYPEPTIDE WITH INCREASED SOLUBILITY FOR TRANSFECTION INTO CELLS AS AN ISOLATED PROTEINAugust 2022January 2025Allow2940YesNo
17795657SOLID STABILIZED LACCASE COMPOSITIONSJuly 2022April 2025Allow3210NoNo
17873732METHODS FOR THE MODIFICATION OF PEPTIDES HARBORING AN N-TERMINUS GLYCINE RESIDUEJuly 2022November 2023Allow1520NoNo
17870649ALGAL STRAIN AND METHODS FOR PRODUCING SIMPLE SUGARSJuly 2022November 2023Allow1611NoNo
17869608VARIANT CANNABINOID SYNTHASES AND METHODS AND USES THEREOFJuly 2022October 2023Allow1510YesNo
17758770Method for producing lysine from microorganism and for constructing microorganismJuly 2022June 2025Allow3621NoNo
17852008B-FAMILY DNA POLYMERASE VARIANT AND KIT COMPRISING THE SAMEJune 2022May 2024Allow2211YesNo
17840140HIGH-THROUGHPUT ENZYME ASSAY FOR SCREENING ACTIVITY OF ACYLTRANSFERASESJune 2022May 2025Allow3521YesNo
17837497REVERSE TRANSCRIPTASE VARIANTSJune 2022November 2023Allow1711YesNo
17837832RECOMBINANT HOST CELLS AND METHODS FOR THE PRODUCTION OF D-LACTIC ACIDJune 2022July 2023Abandon1410NoNo
17830794METHODS OF ENHANCING THE SIALIC ACID CONTENT OF A CHO-EXPRESSED RECOMBINANT GLYCOPROTEINJune 2022January 2023Allow810NoNo
17829866POLYMERASES, COMPOSITIONS, AND METHODS OF USEJune 2022April 2024Allow2321YesNo
17749015COMPOSITIONS AND METHODS FOR THE BIOSYNTHESIS OF 1,4-BUTANEDIOL AND ITS PRECURSORSMay 2022May 2025Abandon3601NoNo
17744782METHOD AMD STRAINS FOR REDUCING BYPRODUCT FUMARIC ACID IN FERMENTATION PROCESS OF L-MALIC ACID AND USE THEREOFMay 2022June 2023Allow1321NoNo
17737389Method of Producing Ribulose-1,5-Bisphosphate Oxygenase Protein FibersMay 2022April 2024Allow2411NoNo
17774753STABILIZED LIQUID ENZYME COMPOSITIONS FOR BREWINGMay 2022March 2025Allow3410NoNo
17735050PICHIA STIPITIS STRAIN AND CULTURES AND USES OF THE SAMEMay 2022April 2023Allow1210NoNo
17755191HIGH-EFFICIENCY SYNTHESIS AND HIGH-PURITY HYALURONIC ACID, AND RECOMBINANT CORYNEBACTERIUM GLUTAMICUM FOR OLIGOSACCHARIDE THEREOFApril 2022March 2024Allow2321YesNo
17769204TRANSAMINASE MUTANT AND USE THEREOFApril 2022May 2025Allow3721NoNo
17658585PROCESS FOR IMPROVING CARBON CONVERSION EFFICIENCYApril 2022December 2024Abandon3210NoNo
17713797PROCESSES FOR PRODUCING A FERMENTATION PRODUCTApril 2022June 2023Allow1421NoNo
17711451ENGINEERED ACETATE KINASE VARIANT ENZYMESApril 2022October 2023Allow1911NoNo
17763886METHOD OF PRODUCING POLYHYDROXYALKANOATEMarch 2022January 2025Allow3410NoNo
17698813PROMOTER VARIANTS FOR PROTEIN PRODUCTIONMarch 2022January 2024Allow2220NoNo
17642925Processes for Producing Fermentation Products and Compositions Used thereinMarch 2022August 2024Allow2921NoNo
17691029Polymerase-Tethered Nucleotides for Nucleic Acid SynthesisMarch 2022November 2022Allow811NoNo
17689586ANAEROBIC PRECONDITIONING OF CELLS FOR IMPROVED IN VITRO PROTEIN PRODUCTIONMarch 2022June 2025Allow3921YesNo
17638250EXPRESSION OF BETA-GLUCOSIDASE IN YEAST FOR IMPROVED ETHANOL PRODUCTIONFebruary 2022May 2025Allow3911NoNo
17678451GLYCEROL-FREE FORMULATIONS FOR REVERSE TRANSCRIPTASESFebruary 2022February 2024Allow2411NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for examiner FRONDA, CHRISTIAN L.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
3
Examiner Affirmed
1
(33.3%)
Examiner Reversed
2
(66.7%)
Reversal Percentile
85.4%
Higher than average

What This Means

With a 66.7% reversal rate, the PTAB has reversed the examiner's rejections more often than affirming them. This reversal rate is in the top 25% across the USPTO, indicating that appeals are more successful here than in most other areas.

Strategic Value of Filing an Appeal

Total Appeal Filings
101
Allowed After Appeal Filing
40
(39.6%)
Not Allowed After Appeal Filing
61
(60.4%)
Filing Benefit Percentile
62.4%
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, 39.6% 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 show good success rates. If you have a strong case on the merits, consider fully prosecuting the appeal to a Board decision.

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

Examiner FRONDA, CHRISTIAN L - Prosecution Strategy Guide

Executive Summary

Examiner FRONDA, CHRISTIAN L works in Art Unit 1652 and has examined 1,710 patent applications in our dataset. With an allowance rate of 75.7%, this examiner has a below-average tendency to allow applications. Applications typically reach final disposition in approximately 26 months.

Allowance Patterns

Examiner FRONDA, CHRISTIAN L's allowance rate of 75.7% places them in the 33% percentile among all USPTO examiners. This examiner has a below-average tendency to allow applications.

Office Action Patterns

On average, applications examined by FRONDA, CHRISTIAN L receive 1.54 office actions before reaching final disposition. This places the examiner in the 39% 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 FRONDA, CHRISTIAN L is 26 months. This places the examiner in the 60% percentile for prosecution speed. Prosecution timelines are slightly faster than average with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +22.4% benefit to allowance rate for applications examined by FRONDA, CHRISTIAN L. This interview benefit is in the 71% 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, 34.2% of applications are subsequently allowed. This success rate is in the 70% percentile among all examiners. Strategic Insight: RCEs show above-average effectiveness with this examiner. Consider whether your amendments or new arguments are strong enough to warrant an RCE versus filing a continuation.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 67.6% 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, 80.0% result in withdrawal of the rejection or reopening of prosecution. This success rate is in the 60% percentile among all examiners. Strategic Recommendation: Pre-appeal conferences show above-average effectiveness with this examiner. If you have strong arguments, a PAC request may result in favorable reconsideration.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 95.8% of appeals filed. This is in the 84% percentile among all examiners. Of these withdrawals, 85.3% 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, 66.2% are granted (fully or in part). This grant rate is in the 82% percentile among all examiners. Strategic Note: Petitions are frequently granted regarding this examiner's actions compared to other examiners. Per MPEP § 1002.02(c), various examiner actions are petitionable to the Technology Center Director, including prematureness of final rejection, refusal to enter amendments, and requirement for information. If you believe an examiner action is improper, consider filing a petition.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 7.5% of allowed cases (in the 93% 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 25.8% of allowed cases (in the 94% 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.
  • 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.