IP Library › Granted Patent US 9,216,202
Granted Patent B2
US 9,216,202 · App. 11/297,916 · Granted Dec 22, 2015

Methods and compositions for selecting cells with increased potency

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Quick Facts
Patent No.
US 9,216,202
App. No.
11/297,916
Granted
Dec 22, 2015
Kind
B2
Abstract

The present invention relates generally to compositions for wound closure. More specifically, the present invention provides human skin equivalents engineered to express exogenous polypeptides (e.g., antimicrobial polypeptides and keratinocyte growth factor 2) and compositions and methods for making human skin equivalents engineered to express exogenous polypeptides. In addition, the present invention provides methods for treatment of wounds with human skin equivalents engineered to express exogenous polypeptides.

Claims (4)

1. A method of selecting near-diploid immortalized keratinocyte cells comprising:

a) providing a starting population of near-diploid immortalized keratinocyte (NIKS) cells;

b) electroporating said starting population of NIKS cells in the absence of exogenous nucleic acid, wherein said electroporation results in an increased proportion of cell colonies that have smooth edges and an overall round morphology and consist essentially of tightly packed cells that are uniform in size; and

c) selecting said electroporated cells of step b) for NIKS cell colonies that have smooth edges and an overall round morphology and consist essentially of tightly packed cells that are uniform in size.

Assignments (12)
RELEASE OF SECURITY INTEREST Recorded Aug 14, 2025
From: ACQUIOM AGENCY SERVICES LLC
To: MALLINCKRODT ENTERPRISES LLC; MALLINCKRODT LLC; MALLINCKRODT PHARMA IP TRADING UNLIMITED COMPANY; MALLINCKRODT PHARMACEUTICALS IRELAND LIMITED; OCERA THERAPEUTICS LLC; SPECGX LLC; STRATATECH CORPORATION; SUCAMPO PHARMA AMERICAS LLC; VTESSE LLC
Reel/Frame 072324/0740 →
RELEASE OF PATENT SECURITY INTERESTS RECORDED AT REEL 060434, FRAME 0536 Recorded Nov 16, 2023
From: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT
To: MALLINCKRODT ENTERPRISES LLC; MALLINCKRODT LLC; SPECGX LLC; OCERA THERAPEUTICS, INC.; STRATATECH CORPORATION; VTESSE LLC; MALLINCKRODT PHARMA IP TRADING UNLIMITED COMPANY; MALLINCKRODT PHARMACEUTICALS IRELAND LIMITED; SUCAMPO PHARMA AMERICAS LLC
Reel/Frame 065601/0347 →
RELEASE OF PATENT SECURITY INTERESTS RECORDED AT REEL 040059, FRAME 0222 Recorded Nov 16, 2023
From: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT
To: MALLINCKRODT INTERNATIONAL FINANCE S.A.; MALLINCKRODT CB LLC; MALLINCKRODT FINANCE GMBH; MALLINCKRODT US HOLDINGS LLC (F/K/A MALLINCKRODT US HOLDINGS INC.); MALLINCKRODT CARRIBEAN, INC.; MALLINCKRODT US POOL LLC; MNK 2011 LLC (F/K/A MALLINCKRODT INC.); LUDLOW LLC (F/K/A LUDLOW CORPORATION); CNS THERAPEUTICS, INC.; MALLINCKRODT ENTERPRISES HOLDINGS LLC (F/K/A MALLINCKRODT ENTERPRISES HOLDINGS, INC.); MALLINCKRODT ENTERPRISES LLC; MALLINCKRODT LLC; LAFAYETTE PHARMACEUTICALS LLC; LIEBEL-FLARSHEIM COMPANY LLC; MALLINCKRODT BRAND PHARMACEUTICALS LLC (F/K/A MALLINCKRODT BRAND PHARMACEUTICALS, INC.); MALLINCKRODT VETERINARY, INC.; MALLINCKRODT US HOLDINGS LLC; IMC EXPLORATION COMPANY; MEH, INC.; MALLINCKRODT HOSPITAL PRODUCTS IP UNLIMITED COMPANY (F/K/A MALLINCKRODT HOSPITAL PRODUCTS IP LIMITED); MALLINCKRODT ARD IP UNLIMITED COMPANY (F/K/A MALLINCKRODT ARD IP LIMITED); OCERA THERAPEUTICS LLC (F/K/A OCERA THERAPEUTICS, INC.); SPECGX LLC; STRATATECH CORPORATION; SUCAMPO PHARMA AMERICAS LLC; VTESSE LLC (F/K/A VTESSE INC.); MALLINCKRODT PHARMACEUTICALS IRELAND LIMITED; MALLINCKRODT PHARMA IP TRADING UNLIMITED COMPANY (F/K/A MALLINCKRODT PHARMA IP TRADING D.A.C.); INFACARE PHARMACEUTICAL CORPORATION; ST SHARED SERVICES LLC; THERAKOS, INC.; IKARIA THERAPEUTICS LLC; INO THERAPEUTICS LLC
Reel/Frame 065610/0083 →
RELEASE OF SECURITY INTERESTS IN PATENTS AT REEL 060389/FRAME 0913 Recorded Nov 15, 2023
From: WILMINGTON SAVINGS FUND SOCIETY, FSB, AS SECOND LIEN COLLATERAL AGENT
To: OCERA THERAPEUTICS LLC (F/K/A OCERA THERAPEUTICS, INC.); MALLINCKRODT LLC; MALLINCKRODT ENTERPRISES LLC; MALLINCKRODT PHARMA IP TRADING UNLIMITED COMPANY; SPECGX LLC; STRATATECH CORPORATION; SUCAMPO PHARMA AMERICAS LLC; VTESSE LLC; MALLINCKRODT PHARMACEUTICALS IRELAND LIMITED
Reel/Frame 065583/0465 →
SECURITY INTEREST Recorded Nov 15, 2023
From: MALLINCKRODT ENTERPRISES LLC; MALLINCKRODT LLC; MALLINCKRODT PHARMA IP TRADING UNLIMITED COMPANY; MALLINCKRODT PHARMACEUTICALS IRELAND LIMITED; OCERA THERAPEUTICS LLC; SPECGX LLC; STRATATECH CORPORATION; SUCAMPO PHARMA AMERICAS LLC; VTESSE LLC
To: ACQUIOM AGENCY SERVICES LLC
Reel/Frame 065595/0376 →
NOTICE OF GRANT OF SECURITY INTEREST IN INTELLECTUAL PROPERTY Recorded Jun 22, 2022
From: MALLINCKRODT ENTERPRISES LLC; MALLINCKRODT LLC; SPECGX LLC; OCERA THERAPEUTICS, INC.; STRATATECH CORPORATION; SUCAMPO PHARMA AMERICAS LLC; VTESSE LLC; MALLINCKRODT PHARMACEUTICALS IRELAND LIMITED; MALLINCKRODT PHARMA IP TRADING UNLIMITED COMPANY
To: DEUTSCHE BANK AG NEW YORK BRANCH
Reel/Frame 060434/0536 →
RELEASE OF SECURITY INTEREST Recorded Jun 17, 2022
From: WILMINGTON SAVINGS FUND SOCIETY, FSB, AS SECOND LIEN COLLATERAL AGENT
To: OCERA THERAPEUTICS, INC.; MALLINCKRODT LLC; MALLINCKRODT ARD IP UNLIMITED COMPANY (F/K/A MALLINCKRODT ARD IP LIMITED); MALLINCKRODT HOSPITAL PRODUCTS IP UNLIMITED COMPANY (F/K/A MALLINCKRODT HOSPITAL PRODUCTS IP LIMITED); MALLINCKRODT PHARMA IP TRADING UNLIMITED COMPANY (F/K/A MALLINCKRODT PHARMA IP TRADING DESIGNATED ACTIVITY COMPANY); SPECGX LLC; STRATATECH CORPORATION; VTESSE LLC (F/K/A VTESSE INC.)
Reel/Frame 060389/0839 →
SECURITY INTEREST Recorded Jun 17, 2022
From: MALLINCKRODT ENTERPRISES LLC; MALLINCKRODT LLC; SPECGX LLC; OCERA THERAPEUTICS, INC.; STRATATECH CORPORATION; SUCAMPO PHARMA AMERICAS LLC; VTESSE LLC; MALLINCKRODT PHARMACEUTICALS IRELAND LIMITED
To: WILMINGTON SAVINGS FUND SOCIETY, FSB, AS SECOND LIEN COLLATERAL AGENT
Reel/Frame 060389/0913 →
SECURITY INTEREST Recorded Dec 10, 2019
From: MALLINCKRODT ARD IP LIMITED; MALLINCKRODT HOSPITAL PRODUCTS IP LIMITED; SPECGX LLC; OCERA THERAPEUTICS, INC.; MALLINCKRODT PHARMA IP TRADING DESIGNATED ACTIVITY COMPANY; STRATATECH CORPORATION; VTESSE INC.; MALLINCKRODT LLC
To: WILMINGTON SAVINGS FUND SOCIETY, FSB, AS SECOND LIEN COLLATERAL AGENT
Reel/Frame 051256/0829 →
NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Sep 16, 2016
From: STRATATECH CORPORATION
To: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT
Reel/Frame 040059/0222 →
CONFIRMATORY LICENSE Recorded Jun 8, 2016
From: STRATATECH CORPORATION
To: NATIONAL INSTITUTES OF HEALTH (NIH), U.S. DEPT. OF HEALTH AND HUMAN SERVICES (DHHS), U.S. GOVERNMENT
Reel/Frame 038915/0599 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 17, 2014
From: CENTANNI, JOHN M.; ALLEN-HOFFMANN, B. LYNN
To: STRATATECH CORPORATION
Reel/Frame 032694/0845 →