Duke Manufacturing Co. vs. Kyle Thomas Kestner et al (Inventor)

Explore the PTAB proceeding IPR2026-00481 filed by Duke Manufacturing Co. on 2026-09-30. This includes filing dates, application numbers, tech centers, patent numbers, and current case status.

Proceeding Overview

Proceeding Number

IPR2026-00481

Filing Date

2026-09-30

Accorded Filing Date

2026-09-30

Institution Decision Date

—

Last Modified Date

2026-10-09

Proceeding Type

IPR

Termination Date

—

Trial Status

Pending

Parties & Counsel

Petitioner

Duke Manufacturing Co.

Represented By

Everding, Williamet al

Patent Owner / Respondent

Kyle Thomas Kestner et al (Inventor)

Represented By

—

Tribunal & Venue

Tribunal

Patent Trial and Appeal Board (USPTO)

Technology Center

TC 3700 - Mechanical Engineering & Manufacturing

Patent Information

1 Patent Involved

Respondent Application Number 15133220

Respondent Patent Number 9980322

External Links

Espacenet

Google Patents

Respondent Inventor Kyle Thomas Kestner et al

Respondent Tech Center TC 3700 - Mechanical Engineering & Manufacturing

Address and Attorney/Agent Information

15 Registered Practitioners

Power of Attorney & Correspondence

Firm / Entity Name ANDRUS INTELLECTUAL PROPERTY LAW, LLP

Customer Number 26753

Address 790 NORTH WATER STREET, SUITE 2200, MILWAUKEE, WI, 53202, UNITED STATES

Attorney / Agent Information

Reg #	Name	Phone
36057	Edward Williams Jr	414-271-7590
40689	Joseph Kuborn	414-271-7590
54180	Peter Holsen	414-271-7590
54853	Aaron Olejniczak	414-271-7590
59016	Donald O'Brien	414-271-7590
60036	Benjamin Imhoff	414-271-7590
68635	Ryann Beck	414-271-7590
69966	Emily Chilson	414-271-7590
70129	Dillon Durnford	414-277-5613
70399	Christopher Liro	414-271-7590
73778	Kevin Spexarth	414-271-5770
75281	Thomas Knight	414-271-7590
76555	Daniel Ochoa	414-271-7590
78928	Melissa Kleine	414-270-7590
83242	John Dyro Jr.	414-223-3787

Proceeding Documents

Notice: NOTICE OF FILING DATE ACCORDED TO PETITION AND TIME FOR FILING PATENT OWNER PRELIMINARY RESPONSE NOTICE

2026-10-09 FILING PARTY: BOARD

Download

1020

U.S. Patent Publication No. 2011/0114618 Exhibit

2026-09-30 FILING PARTY: PETITIONER

Download

1006

Infra Red Heat Sink Specifications Exhibit

2026-09-30 FILING PARTY: PETITIONER

Download

1024

U.S. Patent No. 6,119,587 Exhibit

2026-09-30 FILING PARTY: PETITIONER

Download

1008

Infrared Heatsink Holding Unit Service Manual Exhibit

2026-09-30 FILING PARTY: PETITIONER

Download

Duke Manufacturing Co. vs. Kyle Thomas Kestner et al (Inventor)

Proceeding Overview

Parties & Counsel

Petitioner

Duke Manufacturing Co.

Represented By

Patent Owner / Respondent

Kyle Thomas Kestner et al (Inventor)

Represented By

Tribunal & Venue

Patent Information

Address and Attorney/Agent Information

Power of Attorney & Correspondence

Attorney / Agent Information

Proceeding Documents

Notice: NOTICE OF FILING DATE ACCORDED TO PETITION AND TIME FOR FILING PATENT OWNER PRELIMINARY RESPONSE NOTICE

U.S. Patent Publication No. 2011/0114618 Exhibit

Infra Red Heat Sink Specifications Exhibit

U.S. Patent No. 6,119,587 Exhibit

Infrared Heatsink Holding Unit Service Manual Exhibit

Declaration of Kathryn Veder Exhibit

U.S. Patent No. 6,011,243 Exhibit

Merco Holding Cabinets Exhibit

U.S. Patent No. 5,852,967 Exhibit

U.S. Patent Publication No. 2008/0302778 Exhibit

Proposed Protective Order - Marked-Up Exhibit

Prosecution History of the ’322 Patent Exhibit

E-mail Collection (IRHS Specifications Related) Exhibit

Notice: Power of Attorney NOTICE

U.S. Patent Publication No. 2011/0252813 Exhibit

E-mail Collection (IRHS Manual Related) Exhibit

E-mail Collection (Trade Show Related) Exhibit

Declaration of Sheldon Coach Exhibit

E-mail Collection (IRHS Service Manual Related) Exhibit

U.S. Patent Publication No. 2011/0114624 Exhibit

bk.dukemfg.com Exhibit

U.S. Patent Publication No. 2014/0130684 Exhibit

Petition: as filed PETITION

Declaration of Natasha Zerbey Exhibit

Curriculum Vitae of Glenn Vallee Exhibit

U.S. Patent No. 9,980,322 Exhibit

U.S. Patent Publication No. 2004/0069155 Exhibit

U.S. Provisional Patent Application No. 62/193,992 Exhibit

U.S. Patent No. 6,658,994 Exhibit

U.S. Patent No. 10,258,197 Exhibit

U.S. Patent No. 7,258,064 Exhibit

U.S. Patent Publication No. 2007/0108178 Exhibit

Proposed Protective Order - Clean Exhibit

IRHS Sales Spreadsheet (Redacted) Exhibit

U.S. Patent No. 3,461,275 Exhibit

Flame Magazine Exhibit

U.S. Patent Publication No. 2009/0126580 Exhibit

U.S. Patent Publication No. 2010/0288748 Exhibit

Petitioner's Motion to File Under Seal MOTION

U.S. Patent Publication No. 2016/0073821 Exhibit

Declaration of Arthur Lemley Exhibit

U.S. Patent No. 6,175,099 Exhibit

Infrared Heatsink Holding Unit Operators Manual Exhibit

Declaration of Glenn Vallee Exhibit

Prince Castle Holding Bins Exhibit