Steven J. Callistein
Patent attorney, USPTO registration number 43525, status Active.
- Firm
- Pioneer Hi-Bred International, INC
- Location
- Johnston, IA
- On the USPTO roster since
- before May 2006
Steven J. Callistein is a USPTO-registered patent attorney (registration number 43525) at Pioneer Hi-Bred International, INC, in Johnston, IA. The registration is active on the current USPTO roster, and Steven J. Callistein has been listed on the roster since before May 2006.
Pioneer Hi-Bred International, INC has 10 registered patent practitioners on the roster (5 patent attorneys and 5 patent agents), so Steven J. Callistein works alongside 9 other registered practitioners there.
Johnston, IA has 20 registered patent practitioners in all: 11 patent attorneys and 9 patent agents.
Other registered practitioners in Johnston, IA
- Jenna T. Fortini — Patent agent, Reg. No. 76225, Corteva Agriscience
- Krista K. Hill — Patent agent, Reg. No. 69965, Corteva Agriscience LLC
- Amanda J. Laird — Patent attorney, Reg. No. 68242
- Robert C. Lampe, III — Patent attorney, Reg. No. 51914, Hunt and Williams
- Janae E. Lehman Bell — Patent attorney, Reg. No. 55370, Pioneer Hi- Bred International, Inc.
- Kurt R. Van Thomme — Patent attorney, Reg. No. 58320, Corteva Agriscience LLC Corporate Legal
- Guy R. Watkins — Patent agent, Reg. No. 74066, Corteva Agriscience
- Fred R. Wolf — Patent agent, Reg. No. 69278, Pioneer Hi-Bred International, Inc. Corporate Intellectual Property
All patent attorneys and agents in Johnston, IA
Patent firms in Iowa · Practitioners by state
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