Patent 11623920
Assignment history
Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.
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Ownership chain (2)
Asserters network →Structured records extracted from the assignment-history narrative below. Each entity links to its full ownership-network profile.
2022-06-03 · reel 059523/0488 · Assignment
Murugan Arunkumar, Paramanandam Senthilkumaran, Raman Silambarasan, Shanmugam Arumugam, Guttha Jayaprasad, Saminathan Karthick, Singavarapu Ajay Madhukar, Kudumudi Jayaraman Parthiban, Sorakka Pichandi Parthipan, Palaniswamy Premkumar, Manniyam Kailasam Selvam, Ravi Silambarasan, Ramasamy Venkatragavan, Salamuthu Kaliraj, Erugu Balaiah, Not KrishnareddyNuray Chemicals Private Limited
Correspondent: Jeffrey M. Dean · Dean & Associates
Transfer of inventor interest to the original assignee
2026-01-23 · recorded 2026-02-09 · reel 065849/0569 · Assignment
Nuray Chemicals Private LimitedNovitium Pharma LLC
Correspondent: Matthew F. Warburton · Caldwell Intellectual Property Law
Acquisition of patent rights
Assignment history
Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.
Inventors
- Ramasamy Venkatragavan (Nuray Chemicals Pvt Ltd)
- Erugu Balaiah (Nuray Chemicals Pvt Ltd)
- Paramanandam Senthilkumaran (Nuray Chemicals Pvt Ltd)
- Guttha Jayaprasad (Nuray Chemicals Pvt Ltd)
- Manniyam Kailasam Selvam (Nuray Chemicals Pvt Ltd)
- Noti Krishnareddy (Nuray Chemicals Pvt Ltd)
- Sorakka Pichandi Parthipan (Nuray Chemicals Pvt Ltd)
- Murugan Arunkumar (Nuray Chemicals Pvt Ltd)
- Palaniswamy Premkumar (Nuray Chemicals Pvt Ltd)
- Salamuthu Kaliraj (Nuray Chemicals Pvt Ltd)
- Shanmugam Arumugam (Nuray Chemicals Pvt Ltd)
- Singavarapu Ajay Madhukar (Nuray Chemicals Pvt Ltd)
- Raman Silambarasan (Nuray Chemicals Pvt Ltd)
- Saminathan Karthick (Nuray Chemicals Pvt Ltd)
- Kudumudi Jayaraman Parthiban (Nuray Chemicals Pvt Ltd)
- Ravi Silambarasan (Nuray Chemicals Pvt Ltd)
Original assignee
Nuray Chemicals Pvt Ltd. Nuray Chemicals Pvt Ltd appears to be an active pharmaceutical manufacturing company based in India, involved in the production of active pharmaceutical ingredients (APIs). Their primary line of business is pharmaceutical manufacturing. It is unclear if they shipped a product embodying the claims of US11623920B2. As of the current date, Nuray Chemicals Pvt Ltd is operating.
Assignment timeline
- 2022-06-03 (executed) / recorded 2022-06-03 — Reel 059523/0488
- Conveyance: Assignment
- Assignor: Murugan Arunkumar, Paramanandam Senthilkumaran, Raman Silambarasan, Shanmugam Arumugam, Guttha Jayaprasad, Saminathan Karthick, Singavarapu Ajay Madhukar, Kudumudi Jayaraman Parthiban, Sorakka Pichandi Parthipan, Palaniswamy Premkumar, Manniyam Kailasam Selvam, Ravi Silambarasan, Ramasamy Venkatragavan, Salamuthu Kaliraj, Erugu Balaiah, Not Krishnareddy
- Assignee: Nuray Chemicals Private Limited
- Correspondent: Jeffrey M. Dean, Dean & Associates, PLLC, 12200 E. Briarwood Ave. Suite 175, Centennial, CO 80112. This correspondent also appears on other patent assignments.
- Context: Transfer of inventor interest to the original assignee.
- 2026-01-23 (executed) / recorded 2026-02-09 — Reel 065849/0569
- Conveyance: Assignment
- Assignor: NURAY CHEMICALS PRIVATE LTD.
- Assignee: Novitium Pharma LLC
- Correspondent: Matthew F. Warburton, Caldwell Intellectual Property Law, 1333 Broadway, Suite 1000, Oakland, CA 94612.
- Context: Acquisition of patent rights.
Timeline diagram
timeline
title Ownership of US 11623920
2022 : Inventors to Nuray Chemicals Pvt Ltd
2023 : Issued
2026 : Nuray Chemicals to Novitium Pharma LLC
NPE / troll-pattern signals
- Shell-entity transfer — not present. Nuray Chemicals Pvt Ltd is an operating pharmaceutical company. Novitium Pharma LLC also appears to be an operating pharmaceutical company.
- Known asserter in the chain — not present. Neither Nuray Chemicals Pvt Ltd nor Novitium Pharma LLC are recognized on common NPE lists.
- Repeat correspondent across the chain — present. Jeffrey M. Dean of Dean & Associates, PLLC (Reel 059523/0488) has handled assignments for other patents. Matthew F. Warburton of Caldwell Intellectual Property Law (Reel 065849/0569) is not flagged as a repeat correspondent in this specific chain, but his firm has been noted in other contexts.
- Cascading transfers — not present. Only two assignments are recorded, with a significant time gap between them.
- Pre-litigation transfer — not present. There are no known litigation records for this patent as of the analysis date.
- Bankruptcy fire-sale — not present. No indication of bankruptcy for Nuray Chemicals Pvt Ltd.
- Privateering — unclear. No public information suggests privateering activity.
- Defensive aggregator (anti-NPE) — not present. The patent is not currently assigned to a known defensive aggregator.
Verdict
Insufficient data. While one correspondent has appeared in other assignments, this is not strong enough to categorize the chain as an NPE. The current assignee, Novitium Pharma LLC, appears to be an operating company. Without additional information such as litigation history or further assignments to known NPEs, there is insufficient evidence to confidently classify this patent as being asserted by an NPE.
Generated 5/31/2026, 12:49:07 PM