Prosecution Insights
Last updated: April 19, 2026

Eschweiler & Potashnik, LLC (Tsmc)

91 pending office actions • 3 clients

Portfolio Summary

91
Total Pending OAs
16
Final Rejections
75
Non-Final OAs

Client Portfolio (3 clients)

Client (Assignee)Pending OAs
Taiwan Semiconductor Manufacturing Company, Ltd. 88
Taiwan Semiconductor Manufacturing Co., Ltd. 2
Taiwan Semiconductor Manufacturing Co., Ltd. 1

Pending Office Actions

App #TitleClientExaminerArt UnitStatusFiled
19227765 SPACER FILM SCHEME FORM POLARIZATION IMPROVEMENT Taiwan Semiconductor Manufacturing Company, Ltd. SASINOWSKI, ANDREW 2625 Non-Final OA Jun 04, 2025
18785636 MEMORY DEVICE WITH CONTENT ADDRESSABLE MEMORY UNITS Taiwan Semiconductor Manufacturing Company, Ltd. YANG, HAN 2824 Non-Final OA Jul 26, 2024
18783610 DATA BACKUP UNIT FOR STATIC RANDOM-ACCESS MEMORY DEVICE Taiwan Semiconductor Manufacturing Company, Ltd. BEGUM, SULTANA 2824 Non-Final OA Jul 25, 2024
18782475 BY-SITE-COMENSATED ETCH BACK FOR LOCAL PLANARIZATION/TOPOGRAPHY ADJUSTMENT Taiwan Semiconductor Manufacturing Company, Ltd. PHAM, THOMAS T 1713 Final Rejection Jul 24, 2024
18780873 TOP NOTCH SLIT PROFILE FOR MEMS DEVICE Taiwan Semiconductor Manufacturing Company, Ltd. JOSHI, SUNITA 2691 Non-Final OA Jul 23, 2024
18780815 GAS DISTRIBUTION RING FOR PROCESS CHAMBER Taiwan Semiconductor Manufacturing Company, Ltd. TOLIN, MICHAEL A 1745 Non-Final OA Jul 23, 2024
18777692 ELECTRICAL CLEANING TOOL FOR WAFER POLISHING TOOL SYSTEM Taiwan Semiconductor Manufacturing Company, Ltd. GOLIGHTLY, ERIC WAYNE 1714 Non-Final OA Jul 19, 2024
18768150 SEMICONDUCTOR MEMS STRUCTURE AND METHOD FOR FORMING THE SAME Taiwan Semiconductor Manufacturing Company, Ltd. JOHNSON, RASHAD H 2834 Non-Final OA Jul 10, 2024
18675225 BARRIER LAYER ON A PIEZOELECTRIC-DEVICE PAD Taiwan Semiconductor Manufacturing Company, Ltd. HUBER, PAUL W 2691 Non-Final OA May 28, 2024
18659470 DYNAMIC LIQUID COOLING FOR INTEGRATED DEVICE Taiwan Semiconductor Manufacturing Company, Ltd. DECKER, JAMIL ALEXANDER 2835 Non-Final OA May 09, 2024
18655397 GATE STRUCTURE IN HIGH-K METAL GATE TECHNOLOGY Taiwan Semiconductor Manufacturing Company, Ltd. PHAM, HOAI V 2892 Final Rejection May 06, 2024
18642889 COMPOSITE SPRING STRUCTURE TO REINFORCE MECHANICAL ROBUSTNESS OF A MEMS DEVICE Taiwan Semiconductor Manufacturing Company, Ltd. HOSSAIN, MOAZZAM 2898 Non-Final OA Apr 23, 2024
18636372 INTEGRATED CIRCUIT INTER-DIE COMMUNICATION USING OPTICAL TRANSMISSION STRUCTURES Taiwan Semiconductor Manufacturing Company, Ltd. PENG, CHARLIE YU 2874 Non-Final OA Apr 16, 2024
18635478 TAPERED LIGHT ABSORPTION STRUCTURE FOR INTEGRATED CIRCUIT PHOTODETECTOR Taiwan Semiconductor Manufacturing Company, Ltd. SMITH, CHAD 2874 Non-Final OA Apr 15, 2024
18630160 ADAPTIVE LIQUID COOLING SYSTEM FOR CHIP PACKAGE Taiwan Semiconductor Manufacturing Company, Ltd. MOORE, DEVON TYLEN 3763 Non-Final OA Apr 09, 2024
18617730 DUAL SUBSTRATE SIDE ESD DIODE FOR HIGH SPEED CIRCUIT Taiwan Semiconductor Manufacturing Company, Ltd. ZHU, SHENG-BAI 2897 Final Rejection Mar 27, 2024
18604613 SOLDER RESIST STRUCTURE TO MITIGATE SOLDER BRIDGE RISK Taiwan Semiconductor Manufacturing Company, Ltd. ANDERSON, WILLIAM H 2817 Non-Final OA Mar 14, 2024
18597981 TWO-DIMENSIONAL (2D) MATERIAL FOR OXIDE SEMICONDUCTOR (OS) FERROELECTRIC FIELD-EFFECT TRANSISTOR (FEFET) DEVICE Taiwan Semiconductor Manufacturing Company, Ltd. WALL, VINCENT 2898 Final Rejection Mar 07, 2024
18589527 DAMAGE PREVENTION DURING WAFER EDGE TRIMMING Taiwan Semiconductor Manufacturing Company, Ltd. ENAD, CHRISTINE A 2811 Non-Final OA Feb 28, 2024
18425202 VERTICAL GATE-ALL-AROUND (GAA) MEMORY CELL AND METHOD FOR FORMING THE SAME Taiwan Semiconductor Manufacturing Company, Ltd. ALAM, MOHAMMED R 2897 Non-Final OA Jan 29, 2024
18425224 INTEGRATED CIRCUIT DEVICE INCLUDING A BOND-BASED CAPACITOR Taiwan Semiconductor Manufacturing Company, Ltd. SEDOROOK, DAVID PAUL 2812 Non-Final OA Jan 29, 2024
18425333 OXYGEN AFFINITY LAYER TO IMPROVE RRAM CELL PERFORMANCE Taiwan Semiconductor Manufacturing Company, Ltd. AHMED, SHAHED 2813 Non-Final OA Jan 29, 2024
18422245 METHOD FOR FORMING A MFMIS MEMORY DEVICE Taiwan Semiconductor Manufacturing Company, Ltd. WARREN, MATTHEW E 2817 Non-Final OA Jan 25, 2024
18419915 INTEGRATED CHIP STRUCTURE WITH HIGH THERMAL CONDUCTIVITY LAYER Taiwan Semiconductor Manufacturing Company, Ltd. CHAMBLISS, ALONZO 2897 Non-Final OA Jan 23, 2024
18407705 RESISTOR STRUCTURE WITH CAPPING STRUCTURE ON TFR LAYER Taiwan Semiconductor Manufacturing Company, Ltd. TUTTLE, ETHAN ALEXANDER 2897 Non-Final OA Jan 09, 2024
18401749 METAL-INSULATOR-METAL CAPACITOR WITH PARTIAL BOTTOM LANDING Taiwan Semiconductor Manufacturing Company, Ltd. TRAN, TAN N 2812 Non-Final OA Jan 02, 2024
18401746 SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME Taiwan Semiconductor Manufacturing Company, Ltd. CHIU, TSZ K 2898 Non-Final OA Jan 02, 2024
18401747 MULTI-DIE CMOS IMAGE SENSOR INTEGRATED CIRCUIT DEVICE Taiwan Semiconductor Manufacturing Company, Ltd. CIESLEWICZ, ANETA B 2893 Non-Final OA Jan 02, 2024
18401771 HIGH PERFORMANCE STACKING PIXEL Taiwan Semiconductor Manufacturing Company, Ltd. REAMES, MATTHEW L 2896 Non-Final OA Jan 02, 2024
18400104 THROUGH SUBSTRATE VIA WITH SPACED SHALLOW TRENCH ISOLATION Taiwan Semiconductor Manufacturing Company, Ltd. CHANG, JAY C 2817 Non-Final OA Dec 29, 2023
18397217 INTEGRATED CIRCUIT DEVICE USING OXIDE SEMICONDUCTOR WITH OXYGEN VACANCY STABILIZING MATERIAL Taiwan Semiconductor Manufacturing Company, Ltd. SEVEN, EVREN 2812 Non-Final OA Dec 27, 2023
18511016 THROUGH-SUBSTRATE-VIA WITH REENTRANT PROFILE Taiwan Semiconductor Manufacturing Company, Ltd. PARKER, JOHN M 2899 Non-Final OA Nov 16, 2023
18490893 INSERTION LAYER BETWEEN CHANNEL AND PASSIVATION FOR TRANSISTOR Taiwan Semiconductor Manufacturing Company, Ltd. RODELA, EDUARDO A 2893 Non-Final OA Oct 20, 2023
18480551 IMAGE SENSOR DEVICE AND METHOD OF MANUFACTURING THE SAME Taiwan Semiconductor Manufacturing Company, Ltd. SLUTSKER, JULIA 2891 Non-Final OA Oct 04, 2023
18472427 FRONT-END-OF-LINE (FEOL) CAPACITOR STRUCTURE Taiwan Semiconductor Manufacturing Company, Ltd. TAN, DAVE 2897 Non-Final OA Sep 22, 2023
18459565 INTEGRATED CIRCUIT CONDUCTIVE STRUCTURE FOR CIRCUIT PROBE TESTING Taiwan Semiconductor Manufacturing Company, Ltd. ANDERSON, ERIK ARTHUR 2812 Non-Final OA Sep 01, 2023
18454107 DEEP TRENCH ISOLATION STRUCTURE FOR IMAGE SENSOR Taiwan Semiconductor Manufacturing Company, Ltd. SANDVIK, BENJAMIN P 2812 Non-Final OA Aug 23, 2023
18366845 METHODS FOR FORMING IMAGE SENSORS Taiwan Semiconductor Manufacturing Company, Ltd. LI, MEIYA 2811 Non-Final OA Aug 08, 2023
18363077 INTEGRATION OF LOW AND HIGH VOLTAGE DEVICES ON SUBSTRATE Taiwan Semiconductor Manufacturing Company, Ltd. CHEN, DAVID Z 2815 Non-Final OA Aug 01, 2023
18362101 CAPACITOR ARRAY FORMATION USING SINGLE ETCH PROCESS Taiwan Semiconductor Manufacturing Company, Ltd. RAHIM, NILUFA 2893 Non-Final OA Jul 31, 2023
18360214 METAL GRID STRUCTURE TO IMPROVE IMAGE SENSOR PERFORMANCE Taiwan Semiconductor Manufacturing Company, Ltd. NARAGHI, ALI 2817 Non-Final OA Jul 27, 2023
18358199 OPTICAL ROUTING STRUCTURE ON BACKSIDE OF SUBSTRATE FOR PHOTONIC DEVICES Taiwan Semiconductor Manufacturing Company, Ltd. BEDTELYON, JOHN M 2874 Non-Final OA Jul 25, 2023
18357264 IN-SITU THERMAL ANNEALING OF ELECTRODE TO FORM SEED LAYER FOR IMPROVING FERAM PERFORMANCE Taiwan Semiconductor Manufacturing Company, Ltd. MARUF, SHEIKH 2897 Non-Final OA Jul 24, 2023
18357251 CAVITY IN METAL INTERCONNECT STRUCTURE Taiwan Semiconductor Manufacturing Company, Ltd. PARKER, JOHN M 2899 Non-Final OA Jul 24, 2023
18354217 DEEP TRENCH ISOLATION STRUCTURE FOR IMAGE SENSOR NARROWED BY EPITAXY GROWTH Taiwan Semiconductor Manufacturing Company, Ltd. NARAGHI, ALI 2817 Non-Final OA Jul 18, 2023
18354244 DUAL VIA STRUCTURE FOR THROUGH-CHIP CONNECTIONS Taiwan Semiconductor Manufacturing Company, Ltd. VALENZUELA, PATRICIA D 2812 Non-Final OA Jul 18, 2023
18351784 QUASI FIELD-PLATE STRUCTURE FOR SEMICONDUCTOR DEVICES Taiwan Semiconductor Manufacturing Company, Ltd. WARD, DAVID WILLIAM 2891 Non-Final OA Jul 13, 2023
18351761 HIGH ELECTRON MOBILITY TRANSISTOR WITH HELPING GATE Taiwan Semiconductor Manufacturing Company, Ltd. RAMIREZ, ALEXANDRE XAVIER 2812 Non-Final OA Jul 13, 2023
18346530 IMAGE SENSOR INTEGRATED CHIP STRUCTURE Taiwan Semiconductor Manufacturing Company, Ltd. WRIGHT, TUCKER J 2891 Non-Final OA Jul 03, 2023
18346568 ETCH BLOCK STRUCTURE FOR DEEP TRENCH ISOLATION RECESS CONTAINMENT Taiwan Semiconductor Manufacturing Company, Ltd. NARAGHI, ALI 2817 Non-Final OA Jul 03, 2023
18346506 HIGH EFFICIENCY OPTICAL COUPLER Taiwan Semiconductor Manufacturing Company, Ltd. PETKOVSEK, DANIEL 2874 Non-Final OA Jul 03, 2023
18346544 MULTIPLE WAVELENGTH BAND LIGHT SENSOR DEVICE Taiwan Semiconductor Manufacturing Company, Ltd. BELOUSOV, ALEXANDER 2818 Non-Final OA Jul 03, 2023
18341205 METALENS FOR NEAR INFRARED PHOTODETECTOR Taiwan Semiconductor Manufacturing Company, Ltd. LAU, EDMOND C 2871 Non-Final OA Jun 26, 2023
18329881 BUFFER STRUCTURE WITH INTERLAYER BUFFER LAYERS FOR HIGH VOLTAGE DEVICE Taiwan Semiconductor Manufacturing Company, Ltd. KIM, JAY C 2815 Non-Final OA Jun 06, 2023
18324415 PIXEL WITH DUAL-PD LAYOUT Taiwan Semiconductor Manufacturing Company, Ltd. WRIGHT, TUCKER J 2891 Non-Final OA May 26, 2023
18324201 ISOLATION STRUCTURE FOR ACTIVE DEVICES Taiwan Semiconductor Manufacturing Company, Ltd. JAHAN, BILKIS 2817 Non-Final OA May 26, 2023
18323465 STRUCTURE FOR MICROELECTROMECHANICAL SYSTEMS (MEMS) DEVICES TO CONTROL PRESSURE AT HIGH TEMPERATURE Taiwan Semiconductor Manufacturing Company, Ltd. NARAGHI, ALI 2817 Non-Final OA May 25, 2023
18321239 FERROELECTRIC MEMORY DEVICE WITH SEMICONDUCTOR LAYER Taiwan Semiconductor Manufacturing Company, Ltd. CHEN, JACK S J 2893 Non-Final OA May 22, 2023
18319703 FLASH MEMORY WITH STACKABLE MEMORY CELLS Taiwan Semiconductor Manufacturing Company, Ltd. BOOTH, RICHARD A 2812 Non-Final OA May 18, 2023
18316439 THIN FILM TRANSISTOR STRUCTURE Taiwan Semiconductor Manufacturing Company, Ltd. CHEN, JACK S J 2893 Non-Final OA May 12, 2023
18314184 FRONTSIDE DEEP TRENCH ISOLATION (FDTI) STRUCTURE FOR CMOS IMAGE SENSOR Taiwan Semiconductor Manufacturing Company, Ltd. BERRY, PAUL ANTHONY 2898 Non-Final OA May 09, 2023
18312718 TEST LINE STRUCTURE FOR INTEGRATED CHIP COMPRISING OPTICAL DEVICES Taiwan Semiconductor Manufacturing Company, Ltd. GHYKA, ALEXANDER G 2812 Non-Final OA May 05, 2023
18306488 FLASH MEMORY CELL WITH TUNABLE TUNNEL DIELECTRIC CAPACITANCE Taiwan Semiconductor Manufacturing Company, Ltd. CHAN, CANDICE 2813 Non-Final OA Apr 25, 2023
18305442 POWER DELIVERY FOR MULTI-CHIP-PACKAGE USING IN-PACKAGE VOLTAGE REGULATOR Taiwan Semiconductor Manufacturing Company, Ltd. HUTSON, NICHOLAS LELAND 2818 Final Rejection Apr 24, 2023
18301450 SYMMETRIC BOND SIGNAL INTEGRITY PRESERVATION STRUCTURE AND METHOD Taiwan Semiconductor Manufacturing Company, Ltd. HAN, JONATHAN 2818 Non-Final OA Apr 17, 2023
18298351 IMAGE SENSOR Taiwan Semiconductor Manufacturing Co., Ltd. JOHNSON, CHRISTOPHER A 2899 Non-Final OA Apr 10, 2023
18297182 EMBEDDED CLAMPING DIODE TO IMPROVE DEVICE RUGGEDNESS Taiwan Semiconductor Manufacturing Company, Ltd. LIU, XIAOMING 2812 Non-Final OA Apr 07, 2023
18297162 ZIG-ZAG SIGNAL SHIELDING FOR PIXEL ARRAY Taiwan Semiconductor Manufacturing Company, Ltd. WARREN, MATTHEW E 2815 Non-Final OA Apr 07, 2023
18193777 BOND STRUCTURES HAVING SHIELDING STRUCTURES FOR STACKED CHIPS Taiwan Semiconductor Manufacturing Company, Ltd. GEBREMARIAM, SAMUEL A 2811 Non-Final OA Mar 31, 2023
18192704 MICRO-RING WAVEGUIDE HEATER Taiwan Semiconductor Manufacturing Company, Ltd. BLEVINS, JERRY M 2874 Non-Final OA Mar 30, 2023
18170030 IMAGE SENSOR WITH TRANSISTOR HAVING HIGH RELATIVE PERMITTIVITY Taiwan Semiconductor Manufacturing Company, Ltd. RODRIGUEZ VILLANU, SANDRA MILENA 2898 Non-Final OA Feb 16, 2023
18164845 MAGNETIC TUNNEL JUNCTION (MTJ) HAVING A DIFFUSION BLOCKING SPACER LAYER Taiwan Semiconductor Manufacturing Company, Ltd. LEE, WOO KYUNG 2815 Final Rejection Feb 06, 2023
18155912 SEMICONDUCTOR DEVICE INCLUDING INSULATING STRUCTURE SURROUNDING THROUGH VIA AND METHOD FOR FORMING THE SAME Taiwan Semiconductor Manufacturing Company, Ltd. ASSOUMAN, HERVE-LOUIS Y 2812 Final Rejection Jan 18, 2023
18150903 THERMAL BARRIER STRUCTURE IN PHASE CHANGE MATERIAL DEVICE Taiwan Semiconductor Manufacturing Company, Ltd. TAN, DAVE 2897 Non-Final OA Jan 06, 2023
18150385 INTEGRATED CHIP INCLUDING A CAPACITOR ARRAY Taiwan Semiconductor Manufacturing Company, Ltd. SUN, YU-HSI DAVID 2817 Non-Final OA Jan 05, 2023
18149767 DIELECTRIC STRUCTURE FOR SMALL PIXEL DESIGNS Taiwan Semiconductor Manufacturing Company, Ltd. FAYETTE, NATHALIE RENEE 2812 Final Rejection Jan 04, 2023
18149783 ETCH STOP STRUCTURE FOR IC TO INCREASE STABILITY AND ENDURANCE Taiwan Semiconductor Manufacturing Company, Ltd. BELL, LAUREN R 2896 Final Rejection Jan 04, 2023
18149712 3D SEMICONDUCTOR STRUCTURE FOR WIDE-BANDGAP SEMICONDUCTOR DEVICES Taiwan Semiconductor Manufacturing Company, Ltd. KARIMY, TIMOR 2818 Non-Final OA Jan 04, 2023
18149789 CRUCIFORM BONDING STRUCTURE FOR 3D-IC Taiwan Semiconductor Manufacturing Company, Ltd. GOODWIN, DAVID J 2817 Final Rejection Jan 04, 2023
18149312 THRESHOLD VOLTAGE MODULATION FOR THIN FILM TRANSISTORS Taiwan Semiconductor Manufacturing Company, Ltd. LEE, EUGENE 2815 Final Rejection Jan 03, 2023
17883668 BACK-SIDE DEEP TRENCH ISOLATION STRUCTURE FOR IMAGE SENSOR Taiwan Semiconductor Manufacturing Company, Ltd. GRAY, AARON J 2897 Final Rejection Aug 09, 2022
17866924 METAL FILAMENT VIAS FOR INTERCONNECT STRUCTURE Taiwan Semiconductor Manufacturing Company, Ltd. LIN, JOHN 2815 Non-Final OA Jul 18, 2022
17857382 IMAGE SENSOR HAVING A LATERAL PHOTODETECTOR STRUCTURE Taiwan Semiconductor Manufacturing Company, Ltd. SRINIVASAN, SESHA SAIRAMAN 2817 Non-Final OA Jul 05, 2022
17847450 IMAGE SENSOR GATE STRUCTURE AND DOPING PROFILE Taiwan Semiconductor Manufacturing Company, Ltd. XU, ZHIJUN 2818 Non-Final OA Jun 23, 2022
17834274 SEMICONDUCTOR STRUCTURE AND METHOD OF MANUFACTURING SEMICONDUCTOR STRUCTURE Taiwan Semiconductor Manufacturing Company, Ltd. MULERO FLORES, ERIC MANUEL 2898 Final Rejection Jun 07, 2022
17750951 DUAL BLADE CONFIGURATION FOR WAFER EDGE TRIMMING PROCESS Taiwan Semiconductor Manufacturing Company, Ltd. NADAV, ORI 2811 Final Rejection May 23, 2022
17750746 BOND ROUTING STRUCTURE FOR STACKED WAFERS Taiwan Semiconductor Manufacturing Company, Ltd. SON, ERIKA HEERA 2893 Final Rejection May 23, 2022
17690685 ANTI-FERROELECTRIC TUNNEL JUNCTION WITH ASYMMETRICAL METAL ELECTRODES Taiwan Semiconductor Manufacturing Company, Ltd. MCCOY, THOMAS WILSON 2814 Non-Final OA Mar 09, 2022
17672355 FERROELECTRIC MEMORY DEVICE WITH LEAKAGE BARRIER LAYERS Taiwan Semiconductor Manufacturing Company, Ltd. ANGUIANO, MICHAEL 2899 Non-Final OA Feb 15, 2022
17339764 APPARATUS AND METHOD FOR CONTROLLING WAFER UNIFORMITY Taiwan Semiconductor Manufacturing Co., Ltd. WOLDEGEORGIS, ERMIAS T 2893 Non-Final OA Jun 04, 2021
17317968 MULTIPLE POLISHING HEADS WITH CROSS-ZONE PRESSURE ELEMENT DISTRIBUTIONS FOR CMP Taiwan Semiconductor Manufacturing Co., Ltd. HUANG, STEVEN 3723 Final Rejection May 12, 2021

Managing Eschweiler & Potashnik, LLC (Tsmc)'s Patent Prosecution?

IP Author helps law firms respond to office actions faster with AI-generated responses, examiner analytics, and prosecution intelligence.

Start Free Trial

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month