Prosecution Insights
Last updated: April 19, 2026

Tomlinson Mckinstry, P.C.

24 pending office actions • 5 clients

Portfolio Summary

24
Total Pending OAs
6
Final Rejections
18
Non-Final OAs

Client Portfolio (5 clients)

Client (Assignee)Pending OAs
Kerr Machine Co. 13
The Charles Machine Works, Inc. 7
Tenax Energy Solutions, LLC 1
Nitro Lift Technologies, L.L.C. 1
Advanced Machine Works, LLC 1

Pending Office Actions

App #TitleClientExaminerArt UnitStatusFiled
19393080 Untitled Kerr Machine Co. ZOLLINGER, NATHAN C 3746 Non-Final OA
19358552 Untitled Kerr Machine Co. LESLIE, MICHAEL S 3745 Non-Final OA
19419603 Untitled Kerr Machine Co. LETTMAN, BRYAN MATTHEW 3746 Non-Final OA
19377643 Untitled Kerr Machine Co. BRANDT, DAVID NELSON 3783 Non-Final OA
19368876 FRACTURING PUMP ARRANGEMENT USING A PLUNGER WITH AN INTERNAL FLUID PASSAGE Kerr Machine Co. ZOLLINGER, NATHAN C 3746 Non-Final OA Oct 24, 2025
19363805 Untitled Kerr Machine Co. TREMARCHE, CONNOR J. 3762 Non-Final OA Oct 21, 2025
19358894 FLUID END WITH THREADED DYNAMIC SECTION Kerr Machine Co. AYALA DELGADO, ANTHONY 3746 Non-Final OA Oct 15, 2025
19262339 FLUID END PLUG WITH BORE CLEARANCE Kerr Machine Co. JARIWALA, CHIRAG 3746 Final Rejection Jul 08, 2025
19193599 ISOLATION GAP IN FLUID END DYNAMIC BODY Kerr Machine Co. AYALA DELGADO, ANTHONY 3746 Non-Final OA Apr 29, 2025
19090903 MANIFOLD ASSEMBLY Kerr Machine Co. JARIWALA, CHIRAG 3746 Non-Final OA Mar 26, 2025
19073550 FLUID END WITH THREADED DYNAMIC SECTION Kerr Machine Co. JARIWALA, CHIRAG 3746 Final Rejection Mar 07, 2025
19008116 DRILLING MACHINE ATTACHMENT FOR LOADER The Charles Machine Works, Inc. HALL, KRISTYN A 3672 Non-Final OA Jan 02, 2025
18884292 DOWNHOLE ENERGY HARVESTING SYSTEM The Charles Machine Works, Inc. AMAYA, CARLOS DAVID 2836 Non-Final OA Sep 13, 2024
18826496 MULTI-FUNCTION WELL SERVICE SYSTEM Unknown PATEL, NEEL G 3676 Non-Final OA Sep 06, 2024
18797087 APPARATUS AND METHOD FOR MOVING TOOLS IN A NONFLOW ENVIRONMENT Tenax Energy Solutions, LLC WLODARSKI, NICHOLAS NMN 3672 Non-Final OA Aug 07, 2024
18777752 NITROGEN VAPORIZATION AND INSERTION SYSTEM Nitro Lift Technologies, L.L.C. GRAY, PAUL J 3753 Non-Final OA Jul 19, 2024
18621452 WORK SUPPORT MEMBER AND ADJUSTMENT MECHANISM Advanced Machine Works, LLC HONG, SEAHEE 3723 Non-Final OA Mar 29, 2024
18441097 WRENCH WITH OVER-CENTER JAWS The Charles Machine Works, Inc. SHAKERI, HADI 3723 Non-Final OA Feb 14, 2024
18524993 INTEGRATED PIPE LOCATING AND MARKING SYSTEM The Charles Machine Works, Inc. COURSON, TANIA C 2855 Non-Final OA Nov 30, 2023
18508657 HIGH PRESSURE PUMP Kerr Machine Co. JARIWALA, CHIRAG 3746 Final Rejection Nov 14, 2023
18364627 ARTICULATED WORK MACHINE WITH INDIVIDUALLY POWERED DRIVE MEMBERS The Charles Machine Works, Inc. ARCE, MARLON ALEXANDER 3611 Non-Final OA Aug 03, 2023
18364623 ATTACHMENT FRAME WITH PIVOTING LOADER ARM The Charles Machine Works, Inc. TIGHE, BRENDAN P 3652 Final Rejection Aug 03, 2023
18334701 MULTI-PIECE FLUID END Kerr Machine Co. KASTURE, DNYANESH G 3746 Final Rejection Jun 14, 2023
18078768 MULTI-CYCLONE VACUUM EXCAVATION SYSTEM The Charles Machine Works, Inc. JEONG, YOUNGSUL 1772 Final Rejection Dec 09, 2022

Managing Tomlinson Mckinstry, P.C.'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