USPTO Art Unit 2828 Prosecution Statistics

Art Unit Information

Art Unit: 2828
Group: 2820
Tech Center: 2800
Total Cases: 16,832
Last Active: June 2025

Recent Applications

Detailed information about the 100 most recent patent applications.

Application NumberTitleFiling DateDisposal DateDispositionTime (months)Office ActionsRestrictionsInterviewAppeal
19239787CONTINUOUS-WAVE PEROVSKITE POLARITON LASER DEVICE AND A LASER CHIPJune 2025December 2025Allow610NoNo
19209685METHOD AND DEVICE FOR AUTOMATICALLY LOCKING REPETITION FREQUENCY AND CARRIER-ENVELOP OFFSET FREQUENCY OF OPTICAL FREQUENCY COMBMay 2025August 2025Allow300NoNo
19063845EXTERNAL CAVITY LASER WITH MULTIPLE MATERIALS MICRO-RING REFLECTORSFebruary 2025October 2025Allow711YesNo
19057911SEMICONDUCTOR WAVEGUIDE OPTICAL GAIN DEVICE WITH LATERAL CURRENT CONFINEMENT AND OPTICAL MODE SHAPINGFebruary 2025June 2025Allow400NoNo
19057892SEMICONDUCTOR WAVEGUIDE OPTICAL GAIN DEVICE WITH OPTICAL MODE SHAPINGFebruary 2025May 2025Allow300NoNo
19056941SEMICONDUCTOR WAVEGUIDE OPTICAL GAIN DEVICE WITH OPTICAL MODE SHAPINGFebruary 2025April 2025Allow200NoNo
19039289GASEOUS LASER SYSTEMS WITH EDGE-DEFINING ELEMENT AND RELATED TECHNIQUESJanuary 2025October 2025Allow920NoNo
19007848VERTICAL CAVITY SURFACE EMITTING LASER STRUCTURE AND MANUFACTURING METHOD THEREOFJanuary 2025March 2025Allow200NoNo
18984180VERTICALLY INTEGRATED ELECTRO-ABSORPTION MODULATED LASERS AND METHODS OF FABRICATIONDecember 2024August 2025Allow810NoNo
18973149BROADBAND LASER SYSTEM ENHANCED IN LATER PART OF MID INFRARED SPECTRUMDecember 2024February 2025Allow200NoNo
18971777TWO-DIMENSIONAL PHOTONIC CRYSTAL SURFACE EMITTING LASERDecember 2024September 2025Allow910NoNo
18957531SEMICONDUCTOR WAVEGUIDE OPTICAL GAIN DEVICE WITH LATERAL CURRENT CONFINEMENTNovember 2024May 2025Allow511NoNo
18866832SELF-SEEDING A BIDIRECTIONAL MODE-LOCKED LASERNovember 2024March 2025Allow400NoNo
18941312SYSTEM AND TECHNIQUES FOR DIODE LASER WAVELENGTH SPECTRUM NARROWINGNovember 2024July 2025Allow811NoNo
18920010WAVE SHAPING CIRCUIT FOR LASER DRIVING CIRCUIT, LASER DRIVING CIRCUIT AND LASER DEVICEOctober 2024April 2025Allow600NoNo
18884137HIGH-POWER LARGE-APERTURE FUNDAMENTAL MODE VORTEX OPTICAL WAVEGUIDE COHERENT VCSEL ARRAYSeptember 2024February 2025Allow500NoNo
18845799METHODS AND APPARATUS FOR GENERATING COHERENT LIGHT AT NEW FREQUENCIES VIA TIME VARYING LASINGSeptember 2024April 2025Allow701NoNo
18818256CONTROLLING SOLITON SELF-FREQUENCY SHIFTAugust 2024January 2025Allow501NoNo
18809407Gain Optical Fiber with Double-clad Fluoride and Its Preparation MethodAugust 2024October 2024Allow200NoNo
18803450SEMICONDUCTOR LASER COMPONENTSAugust 2024November 2025Allow1520NoNo
18800495EFFICIENT LASER SYSTEMAugust 2024March 2025Allow710NoNo
18799404METHOD FOR PRODUCING OPTOELECTRONIC DEVICESAugust 2024March 2026Allow1920YesNo
18763148Picosecond Laser Apparatus and Methods for Treating Target Tissues with SameJuly 2024May 2025Allow1110NoNo
18756512OPTICAL ISOLATOR COREJune 2024May 2025Allow1010YesNo
18751413FREQUENCY STABILIZATION METHOD AND SYSTEM FOR TUNABLE LIGHT SOURCES BASED ON CHARACTERISTIC CURVE RECONSTRUCTIONJune 2024November 2024Allow410NoNo
18750965HIGH POWERED LASER ELECTRONICSJune 2024March 2025Allow910NoNo
18716704SINGLE-PHOTON RAMAN OPTICAL FREQUENCY COMB SOURCEJune 2024October 2024Allow500YesNo
18675616METHODS OF LASER PULSE DEVELOPMENT AND MAINTENANCE IN A COMPACT LASER RESONATORMay 2024June 2025Allow1310YesNo
18671499LIGHT EMITTING ELEMENTMay 2024March 2025Allow910NoNo
18663971TUNABLE LASER SOURCE AND LIGHT STEERING APPARATUS INCLUDING THE SAMEMay 2024April 2025Allow1110YesNo
18662698Fiber Laser with Optical Feedback for Contaminant Detection and Other FunctionalityMay 2024July 2024Allow300YesNo
18662720Fiber Laser for Coagulation, Cutting, and Other OperationsMay 2024February 2025Allow911NoNo
18661110Undercut Thermo-Optic Phase ShifterMay 2024August 2025Allow1510NoNo
18659303LOW-POWER SOURCE OF SQUEEZED LIGHTMay 2024April 2025Allow1110NoNo
18659591METHOD AND SYSTEM FOR CONTROL OF LASER EMISSIONS FOR SAFETYMay 2024February 2025Allow900NoNo
18657728HCG TUNABLE VCSEL SYSTEM WITH ASIC FOR PROCESSING INFORMATION AND FIRMWAREMay 2024December 2024Allow700NoNo
18656709OPTICAL FREQUENCY STABILIZATION APPARATUS FOR NARROW SPECTRAL LINEWIDTH LASER GENERATIONMay 2024July 2024Allow200NoNo
18656830PULSED RESONANT LASER DIODE ARRAY DRIVERMay 2024November 2024Allow700NoNo
18655906WAVELENGTH-VARIABLE LASERMay 2024February 2025Allow910NoNo
18648647SINGLE PHOTON SOURCEApril 2024December 2024Allow800NoNo
18647199METHODS AND SYSTEMS FOR ALIGNING MASTER OSCILLATOR POWER AMPLIFIER SYSTEMSApril 2024February 2025Allow1010NoNo
18638654SEMICONDUCTOR LASERS WITH SUBSTRATE MODE SUPPRESSION LAYERSApril 2024August 2024Allow410NoNo
18701213MULTI-WAVELENGTH MID-INFRARED LASER PULSE TRAIN CAVITY DUMPED LASER BASED ON ND:MGO:APLN CRYSTALApril 2024August 2024Allow400NoNo
18628874Sequential-Pulse Single-Frequency Laser Power Amplification Apparatus And Sequence Controllable Multi-Laser SystemApril 2024March 2025Allow1211YesNo
18614642HIGH-SIDE DRIVER METHOD AND DEVICE FOR A LASER OF A LIDARMarch 2024June 2024Allow300NoNo
18605578LASER DEVICE WITH AN EDGE EMITTING SOURCE SURFACE-MOUNTED FOR EMISSION AND ELECTRONIC DEVICEMarch 2024July 2024Allow410NoNo
18601035SYSTEMS AND METHODS FOR CONTROLLING LASER PULSINGMarch 2024March 2026Abandon2420NoNo
18600738LIGHT EMITTING DEVICEMarch 2024January 2025Allow1110NoNo
18600242OPTICAL PHASED ARRAY DYNAMIC BEAM SHAPING WITH NOISE CORRECTIONMarch 2024October 2025Allow1900YesNo
18591069Coherent Beam Combination (CBC) Systems and MethodsFebruary 2024December 2024Allow1010NoNo
18440422PULSED LASER DIODE DRIVERFebruary 2024October 2024Allow800NoNo
18438231TUNABLE LASERFebruary 2024January 2025Allow1110NoNo
18434059Broadband Electro-Absorption Optical Modulator Using On-Chip RF Input Signal TerminationFebruary 2024December 2024Allow1010NoNo
18294885Method for removing unwanted etalon effect in semiconductor gain chipFebruary 2024September 2025Abandon2021NoNo
18427704SPOT-SIZE CONVERTERJanuary 2024December 2024Allow1010YesNo
18427644Surface Emitting Laser With Hybrid Grating StructureJanuary 2024January 2025Allow1110NoNo
18423416BOTTOM-EMITTING EMITTER ARRAY WITH A BOTTOM SIDE METAL LAYERJanuary 2024April 2025Allow1520YesNo
18416740NANOWIRE LIGHT EMITTING DEVICESJanuary 2024July 2025Allow1820NoNo
18414180SEMICONDUCTOR LASER DRIVE DEVICE AND METHOD OF MANUFACTURING THE SAMEJanuary 2024November 2024Allow1010NoNo
18413144Laser Systems and MethodsJanuary 2024May 2025Allow1620NoNo
18411435FREQUENCY STANDARD IMMUNE TO LASER WAVELENGTH VARIATION AND AGINGJanuary 2024March 2024Allow200NoNo
18409474EDGE-EMITTING LASER BARJanuary 2024August 2025Allow1920NoNo
18401307SEMICONDUCTOR LASERSDecember 2023November 2025Abandon2320NoNo
18399844BI-DIRECTIONAL VERTICAL CAVITY SURFACE EMITTING LASERSDecember 2023October 2024Allow1010YesNo
18396290GASEOUS LASER SYSTEMS WITH EDGE-DEFINING ELEMENT AND RELATED TECHNIQUESDecember 2023September 2024Allow920NoNo
18392406CONFIGURABLE HIGH-FREQUENCY PULSED LASER DIODE DRIVER CAPACITOR REFRESH CIRCUITDecember 2023July 2024Allow700NoNo
18572645LATERAL-OPTICAL-MODE-CONTROLLED HIGH-POWER SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD THEREOFDecember 2023December 2025Allow2410NoNo
18390648VERTICAL-CAVITY SURFACE-EMITTING LASER ARRAY WITH ISOLATED CATHODES AND A COMMON ANODEDecember 2023May 2025Allow1710YesNo
18544304APPARATUS FOR PROJECTING LINEAR LASER BEAMSDecember 2023February 2025Allow1410NoNo
18536466CONDENSATION PREVENTION FOR HIGH-POWER LASER SYSTEMSDecember 2023March 2025Abandon1510NoNo
18534810LASER DIODE AND METHOD FOR MANUFACTURING THE SAMEDecember 2023August 2025Allow2010NoNo
18531455DISPLAY DEVICE AND ROLLABLE ELECTRONIC DEVICEDecember 2023March 2025Allow1620YesNo
18527850LASER SYSTEM AND METHOD FOR GENERATING LASER PULSESDecember 2023November 2025Allow2410NoNo
18526059COMPOSITE FIBER LASER ASSEMBLYDecember 2023October 2025Allow2200NoNo
18520272LIGHT EMITTING SEALED BODY AND LIGHT SOURCE DEVICENovember 2023October 2024Allow1010YesNo
18519450DRIVEN-CAVITY FEMTOSECOND SOURCESNovember 2023February 2025Allow1520NoNo
18520457Optical Member, Laser Module Including Said Optical Member, and Laser DeviceNovember 2023December 2025Allow2530NoNo
18557083COHERENT ISING MACHINE BASED ON ON-CHIP OPTICAL MICROCAVITY IN WHISPERING GALLERY MODENovember 2023May 2024Allow700YesNo
18518602ACOUSTO-OPTIC DEFLECTOR AND METHODS OF FABRICATIONNovember 2023December 2024Abandon1210YesNo
18518692LASER-INDUCED GRAPHENE DEVICE BUILT ON WOOD, AND FABRICATION METHOD THEREOFNovember 2023December 2025Allow2511NoNo
18515928SEMICONDUCTOR LASER AND METHOD OF PRODUCTION FOR OPTOELECTRONIC SEMICONDUCTOR PARTSNovember 2023June 2025Allow1921YesNo
18511387LIDAR Sensor System for Vehicles Including Integrated LIDAR ChipNovember 2023September 2024Allow1020YesNo
18560400LASER AND METHOD FOR GENERATING ELECTROMAGNETIC WAVE SIGNAL HAVING HIGH PHASE COHERENCENovember 2023August 2024Allow900NoNo
18506744FAST INTENSITY STABILIZATION OF MULTIPLE CONTROLLER BEAMS WITH CONTINUOUS INTEGRATING FILTERNovember 2023November 2024Allow1210NoNo
18388499GUIDANCE FOR POSITIONING AND ORIENTING FIELD OF VIEW OF INTRAORAL SCANNINGNovember 2023August 2024Allow1010NoNo
18501199SEMICONDUCTOR OPTICAL DEVICE AND METHOD FOR MANUFACTURING THE SAMENovember 2023May 2024Allow700NoNo
18501534ELECTRIC PUMPING VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASER (EP-VECSEL) ARRAYNovember 2023April 2024Allow510NoNo
18499471METHOD FOR WAVELENGTH CONTROL OF SILICON PHOTONIC EXTERNAL CAVITY TUNABLE LASERNovember 2023June 2024Allow700NoNo
18495848POWER MONITOR FOR SILICON-PHOTONICS-BASED LASEROctober 2023September 2024Allow1110YesNo
18495403LIGHT EMITTING DEVICEOctober 2023January 2025Allow1520YesNo
18488809LASER DEVICE WITH NON-ABSORBING MIRROR, AND METHODOctober 2023November 2024Allow1310NoNo
18488881Laser PointerOctober 2023April 2024Allow610NoNo
18487541RECTANGULAR PULSE DRIVING CIRCUIT USING CATHODE PRE-CHARGE AND CATHODE-PULL COMPENSATIONOctober 2023May 2024Allow700NoNo
18486968LASER HAVING TAPERED REGIONOctober 2023October 2024Allow1210NoNo
18486776SEMICONDUCTOR LASER ELEMENT, TESTING METHOD, AND TESTING DEVICEOctober 2023July 2024Allow910NoNo
18486208Silicon-Assisted Packaging of High Power Integrated SOA ArrayOctober 2023September 2024Allow1110NoNo
18379515LOW TEMPERATURE DEPOSITION OF PURE MOLYBDENUM FILMSOctober 2023June 2024Allow810NoNo
18379093ROBOTIC SYSTEM FOR ACOUSTO-OPTIC TRANSDUCER BONDINGOctober 2023April 2024Allow721YesNo
18480119CONTROLLING SOLITON SELF-FREQUENCY SHIFTOctober 2023July 2024Allow911YesNo
18480067BOTTOM EMITTING VCSELOctober 2023September 2024Allow1210NoNo

Appeals Overview

This analysis examines appeal outcomes and the strategic value of filing appeals for art-unit 2828.

Patent Trial and Appeal Board (PTAB) Decisions

Total PTAB Decisions
158
Examiner Affirmed
96
(60.8%)
Examiner Reversed
62
(39.2%)
Reversal Percentile
77.3%
Higher than average

What This Means

With a 39.2% reversal rate, the PTAB reverses the examiner's rejections in a meaningful percentage of cases. 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
637
Allowed After Appeal Filing
221
(34.7%)
Not Allowed After Appeal Filing
416
(65.3%)
Filing Benefit Percentile
61.7%
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, 34.7% 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.

Art Unit 2828 - Prosecution Statistics Summary

Executive Summary

Art Unit 2828 is part of Group 2820 in Technology Center 2800. This art unit has examined 16,832 patent applications in our dataset, with an overall allowance rate of 80.0%. Applications typically reach final disposition in approximately 24 months.

Comparative Analysis

Art Unit 2828's allowance rate of 80.0% places it in the 63% percentile among all USPTO art units. This art unit has an above-average allowance rate compared to other art units.

Prosecution Patterns

Applications in Art Unit 2828 receive an average of 1.60 office actions before reaching final disposition (in the 28% percentile). The median prosecution time is 24 months (in the 84% percentile).

Strategic Considerations

When prosecuting applications in this art unit, consider the following:

  • The art unit's allowance rate suggests a more favorable examination environment compared to the USPTO average.
  • With fewer office actions than average, plan for relatively streamlined prosecution.
  • The median prosecution time is shorter than average and should be factored into your continuation and client communication strategies.
  • Review individual examiner statistics within this art unit to identify examiners with particularly favorable or challenging prosecution patterns.

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.