IFICLS (IFI Current Patent Legal Status Database)
Subject
Coverage• Reassigned U.S. patents from 1980 tothe present• Reexamined U.S. patents from 1981 tothe present• Extended U.S. patents from late 1985 tothe present• Expired U.S. patents from September
1985 to the present• Reinstated U.S. patents from September
1985 to the present

File Type

Bibliographic

Features

Thesaurus

None

Alerts (SDIs)

Weekly (default), monthly, bimonthly

CAS Registry
Number® IdentifiersPage Images

STN® AnaVist™

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SLART

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Learning Database

Structures• Adverse decision records from 1980 tothe present Disclaimer/dedication
records from 1980 to the present• Reexamination request records from1980 to the present• Reissue request records from 1985 tothe present• Certificates of correction

RecordContent• Current legal status of U.S. patents. It includes reassigned patents (when theownership of a patent is transferred from the original assignee to another company orindividual), reexamined patents (patents that have undergone a review by the U.S.
Patent and Trademark Office (USPTO) due to substantial new questions regarding thepatentability of the patent's claims), patents extended beyond their normal 20-year
term, expired patents, and reinstated patents.
• Adverse decision in interference, disclaimer/dedication information, reexamination
request, reissue request, reissued patents, and certificate of correction.
• Patent number, former assignee, new assignee, reassignment type, e.g., full interest,
date of reassignment, and reel and frame number of the USPTO microfilm record.
• Reexamination records include the patent number, patent assignee, name andlocation of the party requesting reexamination, reexamination request number anddate, and reexamination certificate number and date. Text from the reexamination
certificate describing the results of the reexamination is also included.
• Extension, expiration, and reinstatement records include the patent number, patentassignee, expiration, extension, or reinstatement date, and publication date of the
Official Gazette of the USPTO containing the announcement of action.
• Reexamination request records include patent assignee, patent information, andreexamination request information. Adverse decision records include patent assignee,
patent information, and adverse decision information. Disclaimer/dedication records
include patent assignee, patent information, and disclaimer information. Reissue
request records include patent assignee, patent information, reissue request
information, and reissue patent numbers. Records for certificate of correction include
patent assignee, patent information, and correction date.

File SizeMore than 5.4 million records (08/19)

Coverage

1980-present

3B

4B

5B

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IFICLS

Updates

Updated weekly

Language

English

Database
Producer

IFI CLAIMS® Patent Services, a division of
Fairview Reseach LLC
P.O. Box 1148, Madison, CT 06443
Phone: (203) 779-5301
Fax: (203) 583-4521
Email: info@ificlaims.com

Sources

The U.S. Patent and Trademark Office

User Aids• Online Helps (HELP DIRECTORY lists all help messages available)• STNGUIDE

Clusters• ALLBIB• HPATENTS• PATENTS
STN Database Clusters information (PDF).

RelatedDatabases• IFIALL• IFIREF

PricingEnter HELP COST at an arrow prompt (=>).

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7B

8B

9B

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IFICLSSEARCH and DISPLAY Field Codes
There are no fields that allow left truncation.
Search Field Name

SearchCode

Display
Codes

Search Examples

Basic Index (contains single words
from the adverse decision text
(ADTX), disclaminer/dedication text
(DDTX), and patent claim text for
reexamined patents (CLM) fields)None(or /BI)S ALKOXY?
S ALKYL RADICAL#S DISCLAIMER#

ADTX, CLM,
DDTX

Accession Number
Adverse Decision Date (1)Adverse Decision Number
Correction Date (1)Disclaimer/Dedication Date (1)Document Type (code and text)

/AN
/ADD
/ADN
/CDAT
/DDD
/DT
(or /TC)
/ED
/XPD
/XTD
/FA
/LA
/ADG

S 1878343/AN
S APR 7, 2005/ADD
S 103473/ADN
S 20040601/CDATS 20010904/DDD
S EXPIRED/DT
S XP/DT
S 20040511/ED
S 20020700-20031100/XPD
S XTD> 19940401
S CLM/FAS ENGLISH/LA
S 20050222/ADG

AN
ADD
ADN
CDAT
DDD
DT

/DDG

S NOV 13 2001/DDG

DDG

/XPG

XPG

/XTG

S XPG>19970901
S XPG>SEP 1, 1997
S XTG>19950900/RQG

S 19960903/RQG

RQG

/RIG

S RIG>=19971123
S RIG>=NOV 23, 1997
S 19951205/REG

RIG

S KODAK/PA
S DOW CORNING/PA
S BRAUN/PAO
S US/PCS US4893422/PN
S US33420/PN
S 19900116/PD
S PY>=1997
S KENYON/RAAS UPJOHN/RAC
S 20030811/RAD
S FULL/RAK
S 19900410/RXD
S RXD>=19920630
S 19920218/RRD
S B14769435/RXN
S 19960802/RQD
S 90/004321/RQN
S ELECTRA/RQR
S DOW CHEMICAL/RXR
S RID>19930500
S 1107/REX

PA, RAC

Entry Date (1)Expiration Date (1)Extension Date (1)Field Availability
Language (code and text)
Official Gazette Issue Datewith Adverse Decision (1)Official Gazette Issue Date with
Disclaimer/Dedication Date (1)Official Gazette Issue Date withExpiration Announcement (1)Official Gazette Issue Date with
Extension Announcement (1)Official Gazette Issue Datewith Reexamination Request (1)Official Gazette Issue Date withReinstatement Announcement (1)Official Gazette Issue Datewith Reissue Request (1)Patent Assignee (2)Patent Assignee, Original (2,3)
Patent Country
Patent Number (4,5)
Publication Date (1)Publication Year (1)Reassignment Address (2)Reassignment Company (2)Reassignment Date (1)Reassignment Kind (2)Reexamination Certificate
Date (1)Reexamination Date (1)Reexamination Numbers
Reexamination Request Date (1)Reexamination Request Number
Reexamination Request Requestor (2)Reexamination Requestor (2)Reinstatement Date (1)Reissue Examination Group

/REG
/PA
(or /CS)
/PAO
/PC
/PN
/PD
/PY
/RAA
/RAC
/RAD
/RAK
/RXD
/RRD
/RXN
/RQD
/RQN
/RQR
/RXR
/RID
/REX

Not displayed
XPD
XTD
Not displayed
Not displayed
ADG

XTG

REG

PAO
PI
PI, PN
PI
PI
RAA
RAC
RAD
RAK
RXD
RRD
RXN
RQD
RQN
RQR
RXR
RID
REX

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IFICLSSEARCH and DISPLAY Field Codes (cont'd)
SearchCode

Search Field Name
Reissue Request Date (1)Reissue Request Number
Update Date (1)Update Date, Correction Data (latest
IFI update to Correction Data) (1)Update Date, Reassignment Data(latest IFI update to Reassignment
Data) (1)Update Date, Status Information(latest IFI update to the Status
Information) (1,6)

Search Examples

Display
Codes

/RED
/RRN
/UP
/UPCD

S 20040213/RED
S 06/026465/RRN
S 20040420/UP
S 19990703/UPCDRED
RRN
Not displayed
UPCD/UPRAIS 20010320/UPRAIUPRAI/UPSTAS 19990720/UPSTAUPSTA(1) Numeric search field that may be searched with numeric operators or ranges.
(2) Search with implied (S) proximity is available in this field.
(3) This field contains data only for reassigned patents.
(4) Either STN or Derwent format may be used.
(5) Reissue patent numbers are searchable in the field.
(6) This field contains the latest IFI update to the Status Information other than Certificate of Correction or Reassignment Actions. This
includes Expirations, Extensions, Reinstatements, Adverse Decisions, Disclaimer/Dedications, Request for Reexamination, Requests
for Reissue, and Reexaminations.

Super Search Fields
Enter a super search code to perform a search in one or more fields that may contain the desired information.
Super search fields facilitate crossfile and multifile searching. EXPAND may not be used with super search
fields. Use EXPAND with the individual field code instead.
Search Field Name

SearchCodePatent Assignee Group/PASS

Patent Countries
Patent Numbers (1,2)

/PCS
/PATS

(1) Either STN or Derwent format may be used.
(2) Reissue patent numbers are searchable in the field.

August 2019

FieldsSearched/PA, /PAO,/RAC/DS, /FC, /PC/FN, /PN

Search Examples

Display
Codes

S MIT/PASSPASS

S US/PCSS US4893422/PATSPI
PI, PN5
IFICLSDISPLAY and PRINT Formats
Any combination of formats may be used to display or print answers. Multiple codes must be separated bycommas or spaces, e.g., D L3 1-10 PI,PA or D L3 1-10 PI PA. The fields are displayed or printed in the orderrequested.
Hit-term highlighting is available in AND, ADTX, CDAT, CLM, DDTX, DT, PA, RQN, RRN, and RXN.
Highlighting is set ON by default and must be ON when SEARCH is performed in order to use the HIT, KWIC,
and OCC formats.
FormatContent

ExamplesAN (1)
ADD
ADG
AND
ADTX
CDAT
CLM
DDD
DDG
DDTX
DT (TC)
PA (CS)PAO
PI (1)
PN (1)
RAA
RAC
RAD
RAK
RED
REG
REX
RID
RIG
RQD
RQG
RQN
RQR
RRD
RRN
RXD
RXN
RXR
UPCD (1,2)
UPRAI (1,2)
UPSTA (1,2)
XPD
XPG
XTD
XTG

Accession Number
Adverse Decision Date
Official Gazette Issue Date with Adverse Decision
Adverse Decision Number
Adverse Decision Text
Correction Date
Patent Claim Text
Disclaimer/Dedication Date
Official Gazette Issue Date with Disclaimer/Dedication Date
Disclaimer/Dedication Text
Document Type
Patent Assignee
Patent Assignee, Original
Patent Information
Patent Information and Reissue Patent Number
Reassignment Address
Reassigned Country
Reassignment Date
Reassignment Kind
Reissue Request Date
Official Gazette Issue Date with Reissue Request
Reissue Examination Group
Reinstatement Date
Official Gazette Issue Date with Reinstatement Announcement
Reexamination Request Date
Official Gazette Issue Date with Reexamination Request
Reexamination Request Number
Reexamination Request Requestor
Reexamination Request Date
Reissue Request Number
Reexamination Certificate Date
Reexamination Numbers
Reexamination Requestor
Update Date, Correction Data
Update Date, Reassignment Information
Update Date, Status Information
Expiration Date
Official Gazette Issue Date with Expiration Announcement
Extension Date
Official Gazette Issue Date with Extension Announcement

D L4 5 AN
D 1,3 ADDD ADG 1-5
D AND
D ADTXD CDAT
D 7 CLM
D DDD
D DDG
D DDTX
D 1-4 DTD L2 1-3 PA
D PA, PAO
D 1,5,10 PI
D PN
D RAA
D 3-6 RAC
D L4 RAD
D RAK
D RED
D REG
D REX
D RID
D RIG
D RQD L1
D RQG
D RQN
D RQR 1-3
D 2,4,6 RRD
D RRN
D 2-4,10 RXD
D RXN
D RXR
D UPCD
D UPRAID UPSTA
D 4 XPD
D XPG
D XTD
D XTG

ABS
ADI
ALL

CLM
Adverse Decision Information (AND, ADD, ADG, ADTX)
AN, PA, PI, DT, CDAT, RID, RIG, XPD, XPG, XTD, XTG, RXI (RXR, RXN, RRD,
Certificate Number, RXD), RAI (RAD, RAK, PAO, RAC, RAA), ADI (AND, ADD,
ADG, ADTX), DDI (DDD, DDG, DDTX), RQI (RQR, RQN, RQD, RQG), REI(RRN, RED, REG, REX, PN), CLM

D L2 ABS
D L1 ADI 1-2
D 3 ALL

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IFICLSDISPLAY and PRINT Formats (cont’d)Format
BIB (STD)

Content

ExamplesD 1,8 BIB

CBIB
DDI
IALL
IBIB
ISTD
PASS
RAI
REI
RQI
RXI
STD
TRIAL (TRI) (1)AN, PA, PI, DT, CDAT, RID, RIG, XPD, XPG, XTD, XTG, RXI (RXR, RXN,
RRD, Certificate Number, RXD), RAI (RAD, RAK, PAO, RAC, RAA), ADI(AND, ADD, ADG, ADTX), DDI (DDB, DDG, DDTX), RQI (RQR, RQN, RQD,
RQG), REI (RRN, RED, REG, REX, PN) (BIB is the default)
Compressed bibliographic information
Disclaimer/Dedication Information (DDD, DDG, DDTX)
ALL, indented with text labels
BIB, indented with text labels
STD, indented with text labels
PA, PAO, RAC
Reassignment Information (RAD, RAK, PAO, RAC, RAA)
Reissue Request Information (RRN, RED, REG, REX, PN)
Reexamination Request Information (RQR, RQN, RQD, RQG)
Reexamination Information (RXR, RXN, RRD, RXD)
BIB
AN, PIHITKWIC
OCC (1)

Fields containing hit terms
Hit terms with 20 words on either side (KeyWord-In-Context)
Number of occurrences of hit terms and fields in which they occur

D HIT
D KWICD OCC 1-10

D L1 CBIB 2
D DDI
D IALLD IBIBD ISTD 1-5
D PASS
D L1 RAI
D REI
D RQI
D RXI
D 1,8 STD
D 1-5 TRIAL(1) No online display fee for this format.
(2) Custom display only.

SELECT, ANALYZE, and SORT Fields
The SELECT command is used to create E-numbers containing terms taken from the specified field in ananswer set.
The ANALYZE command is used to create an L-number containing terms taken from the specified field in ananswer set.
The SORT command is used to rearrange the search results in either alphabetic or numeric order of thespecified field(s).
Field Name
Accession Number
Adverse Decision Date
Adverse Decision Number
Adverse Decision Text
Claim Text
Corporate Source
Correction Date
Disclaimer/Dedication Date
Disclaimer/Dedication Text
Document Type
Expiration Date
Extension Date
Official Gazette Issue Date with Adverse Decision
Official Gazette Issue Date with Disclaimer/Dedication Date
Official Gazette Issue Date with Expiration Announcement
Official Gazette Issue Date with Extension Announcement
Official Gazette Issue Date with Reexamination Request
Official Gazette Issue Date with Reinstatement Announcement
Official Gazette Issue Date with Reissue Request

August 2019

Field Code
AN
ADD
ADN
ADTX
CLM
CS
CDAT
DDD
DDTX
DT
XPD
XTD
ADG
DDG
XPG
XTG
RQG
RIG
REG

ANALYZE/
SELECT (1)
Y (2)
Y (2)
Y
Y (3)
Y (3)
Y
Y (2)
Y (2)
Y (3)
Y
Y (2)
Y (2)
Y (2)
Y (2)
Y (2)
Y (2)
Y (2)
Y (2)
Y (2)

SORT
N
Y
Y
N
N
Y
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y

7
IFICLS

SELECT, ANALYZE, and SORT Fields (cont'd)
Field Name
Patent Assignee
Patent Assignee Group
Patent Assignee, Original
Patent Countries
Patent Country
Patent Information
Patent Number
Publication Date
Publication Year
Reassignment Agent
Reassignment Company
Reassignment Date
Reassignment Kind
Reexamination Certificate Date
Reexamination Date
Reexamination Number
Reexamination Request Date
Reexamination Requester
Reexamination Request Date
Reexamination Request Number
Reexamination Request Requestor
Reinstatement Date
Reissue Examination Group
Reissue Request Date
Reissue Request Number
Treatment CodeUpdate Date, Correction Data
Update Date, Reassignment Information
Update Date, Status Information

Field Code
PA
PASS
PAO
PCS
PC
PI
PN
PATS
PD
PY
RAA
RAC
RAD
RAK
RXD
RRD
RXN
RRD
RXR
RQD
RQN
RQR
RID
REX
RED
RRN
TC
UPCD
UPRAI
UPSTA

ANALYZE/
SELECT (1)

SORT

Y
Y
Y (2)
Y (2,4)
Y (2)Y (2,5)
Y (2,6) (default)
Y (2,6)
Y (2)
Y (2)
Y (2)
Y (2)
Y (2)
Y (2)
Y (2)
Y (2)
Y
Y (2)
Y (2)
Y (2)
Y
Y (2)
Y (2)
Y (2)
Y (2)
Y
Y
Y (2)
Y (2)
Y (2)

Y
N
Y
N
Y
Y
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y

(1) HIT may be used to restrict terms extracted to terms that match the search expression used to create the answer set, e.g., SEL HITPA.
(2) SELECT HIT and ANALYZE HIT are not valid with this field.
(3) Appends /BI to the terms created by SELECT.
(4) Selects or analyzes PC with /PCS appended to the terms created by SELECT.
(5) Selects or analyzes the patent number with /PN appended to the terms created by SELECT.
(6) Selects or analyzes the patent and reissue patent numbers with /PN appended to the terms created by SELECT.
(7) Selects or analyzes the patent and reissue patent numbers with /PATS appended to the terms created by SELECT.

August 2019

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IFICLS

Sample Records
DISPLAY IALL (Reexamined Patent)
ACCESSION NO.:
4047461 IFICLSPATENT ASSIGNEE:
International Business Machines Corp
PATENT INFORMATION:
US 6718445 20040406
DOCUMENT TYPE:REEXAMINED; REEXAMINATION REQUESTED;CERTIFICATE OF CORRECTION
CORRECTION DATE:
5 Jul 2005
REEXAMINATION REQUEST:REQUESTOR:International Business Machines Corporation, Armonk, NY
REQUEST NUMBER:
90/007210
REQUEST DATE:
20040917
OG DATE:
20041102
REQUESTOR:International Business Machines Corporation, Armonk, NY
REQUEST NUMBER:
90/007134
REQUEST DATE:
20041014
OG DATE:
20041203
REEXAMINATION INFO.:REQUESTOR:International business Machines Corporation Armonk, NY
US
REQUEST NUMBER:
90/007134
REQUEST DATE:
20041014
CERTIFICATE NUMBER: C16718445 (5170th)
CERTIFICATE DATE:
20050802
CLAIM
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT: The patentability ofclaims 1-19 is confirmed. 1. A buffer management system comprising: a buffer
pool further comprised of an amount of fixed storage and an amount of virtualstorage; a target maximum fixed value for the amount of fixed storage, thetarget maximum fixed value dynamically alterable by a system administrator; atarget maximum virtual value for the amount of virtual storage, the target
maximum virtual value dynamically alterable by a system administrator; and abuffer manager for dynamically varying the amount of fixed storage and theamount of virtual storage based on a comparison of present usage of the amountof fixed storage and the amount of virtual storage to target maximum fixed andtarget maximum virtual values.

DISPLAY IALL (Reassigned Patent)
ACCESSION NO.:
4297251 IFICLSPATENT ASSIGNEE:
Wilson, William F
PATENT INFORMATION:
US 6945423 20050920
DOCUMENT TYPE:REASSIGNEDREASSIGNMENT INFO.:
DATE:
20050214KIND:
ASSIGNMENT OF ASSIGNORS INTERESTASSIGNOR:WILSON, WILLIAM, DATE SIGNED: 10/04/2004
ASSIGNEE:
SURGE CONTROL, LLC, 3910 S. INDUSTRIAL AVE., COEUR D'
ARLENE, IDAHO, 83815
AGENT:MICHAEL S. SMITH, BLACK LOWE & GRAHAM, PLLC, 701 FIFTHAVENUE, SUITE 4800, SEATTLE, WA 98104
MICROFILM REEL NO: 016264
MICROFILM FRAME NO: 0279

DISPLAY IALL (Expired Patent)
ACCESSION NO.:
2613100 IFICLSPATENT ASSIGNEE:
Stellmach, Robert N
PATENT INFORMATION:
US 5423083 19950606
DOCUMENT TYPE:
EXPIRED
EXPIRED INFO.:
19990606
OG DATE: 19990803

August 2019

9
IFICLSDISPLAY IALL (Reinstated Patent)
ACCESSION NO.
2048875 IFICLSPATENT ASSIGNEE:
Testing Machines Inc
PATENT INFORMATION:
US 4928533 19900529
DOCUMENT TYPE:
EXPIRED; REINSTATEDEXPIRED INFO.:
19940529
OG DATE: 19940809
REINSTATEMENT INFO.: 19940803
OG DATE: 19941004
DISPLAY ALL (Extended Patent)
ACCESSION NO.:2475348 IFICLSPATENT ASSIGNEE:
Procter & Gamble Co The
PATENT INFORMATION:
US 34617 19940524
DOCUMENT TYPE:EXTENDED
EXTENDED INFO.:DATE: 19941201 DESC: (One-year) OG DATE: 19950214
DATE: 19950214 DESC: (Nine (9) months)
OG DATE:
19970225
DATE: 19960312 DESC: (One year) OG DATE: 19960312
DATE: 19981023 DESC: (two years) OG DATE: 19981201
ORIG. EXPIRATION DATE: 19960212, NEW EXPIRATION DATE:
19980130
TRADE NAME:
OLEAN (olestra)
DISPLAY IALL (Adverse Decision)
ACCESSION NO.:
3286429 IFICLSPATENT ASSIGNEE:
TruTek Inc.
PATENT INFORMATION:
US 5697929 19971216
DOCUMENT TYPE:
ADVERSE DECISIONADVERSE DECISION IN INTERFERENCE:
INTERFERENCE NO:
104708DECISION DATE:
20031126
OG DATE:
20030114
CLAIMS AFFECTED:
as to claims 1, 3-8 and 10-14.
DISPLAY IALL (Disclaimer/Dedication)
ACCESSION NO.:
3804778 IFICLSPATENT ASSIGNEE:
Applied materials Inc.
PATENT INFORMATION:
US 6579426 20030617
DOCUMENT TYPE:DISCLAIMER/DEDICATIONDISCLAIMER INFO.:
DATE:
20030610
OG DATE:
20031111TEXT:
The term of this patent shall not extend beyond theexpiration date of Pat. No. 6,254,738.
DISPLAY IALL (Reexamination Requested)
ACCESSION NO.:
3523296 IFICLSPATENT ASSIGNEE:
Apcon Inc.ech Group Inc
PATENT INFORMATION:
US 6243510 20010605
DOCUMENT TYPE:REEXAMINATION REQUESTEDREEXAMINATION REQUEST:REQUESTOR:
Apcon, Inc., Tualatin, OR.
REQUEST NUMBER:
90/006998
REQUEST DATE:
200404061
OG DATE:
20040518
OG DATE:
19990601

August 2019

10
IFICLSDISPLAY IALL (Reissue Request)
ACCESSION NO.:
3108309 IFICLSPATENT ASSIGNEE:
Surgical Innovations LLC
PATENT INFORMATION:
US 5868765 19990209
DOCUMENT TYPE:REISSUE REQUESTEDREISSUE REQUEST:REQUEST NUMBER:
09/299449
REQUEST DATE:
19990426
OG DATE:
19990622
EXAMINATION GROUP: 3731
PATENT NUMBER:
US 37107DISPLAY ALL (Certificate of Correction)
ACCESSION NO.:
3131384 IFICLSPATENT ASSIGNEE:NEC Corp JP
PATENT INFORMATION:
US 5889744 19990330
DOCUMENT TYPE:
CERTIFICATE OF CORRECTION
CORRECTION DATE:
1 Jun 1999

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August 2019

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