A ppl. N o :10831281
Title of Th e Invention :rend e ring d igital content in a content protection system
accord ing to a plurality of ch aine d ...
Evaluation Date 2019-04-07
Patent N o | A ppl. N o 07568096 | 10831281
F ield O f A rt e le ctric/ele ctro nic/IT
Title of Th e Inventionre nd e ring d igital co nte nt in a co nte nt pro te ctio n syste m acco rd ing
to a plurality o f ch aine d ...
R igh t h old e r | A pplicant M IC R O S O F T C O R P O R A T IO N , W A S H IN G T O N | M icro so ft C o rpo ratio n
F iling Date | Issue Date | Expiration Date 2004-04-23 | 2009-07-28 |
Patent Sum m ary
A re q ue st to re nd e r encrypte d co nte nt is re ce ive d and a ch ain o f lice nse s co rre spo nd ing to th e co nte nt is lo cate d . Th e
ch ain includ e s a le af lice nse link e d to th e co nte nt at one end o f th e ch ain, a ro o t lice nse at th e o th e r end o f th e ch ain,
and any inte rm e d iate lice nse s th e re b e tw e e n. Th e le af lice nse and any inte rm e d iate lice nse s in th e ch ain are e ach
bo und to th e ad jo ining lice nse in th e ch ain to w ard th e ro o t lice nse, and th e ro o t lice nse is bo und to an o w ne r o f a
private k e y (PR-U ). F o r e ach lice nse in th e ch ain, th e lice nse is ve rifie d and it is co nfirm e d th at th e lice nse allo w s th e
co nte nt to be re nd e re d . A d e cryptio n k e y is o btaine d fro m th e le af lice nse base d on applicatio n o f (PR-U ) to th e ro o t
lice nse, th e o btaine d k e y is applie d to d e crypt th e encrypte d co nte nt, and th e d e crypte d co nte nt is re nd e re d .
● A bstract
Evaluation R e sult(100%)Evaluation R e sult(100%)Evaluation R e sult(100%)Evaluation R e sult(100%)Evaluation R e sult(100%) R igh ts(35%) Tech nology(35%) U sability(30%)
A A A BBB A A
O verall Evaluation A nalysis
P ate nt N o. 07568096, "R end e ring d igital co nte nt in a co nte nt pro te ctio n syste m acco rd ing to a plurality o f ch aine d
d igital lice nse s" w as evaluate d as A A grad e (top 4.3%) in th e art. Th e d e taile d evaluatio n ite m s w e re evaluate d as
stre ngth o f pate nt righ t A grad e (top 19.9%), quality o f te ch nolo gy BBB grad e (top 35.4%), and usab ility A A grad e
(to p 4.2%).
● G e ne ral R evie w
Evaluation R e sult 4%
R igh ts 20%
Tech nology 35%
U sab ility 4%
※ A n evaluation grad e is grante d accord ing to a percentage provid e d in th e above grad e d istribution table w ith re spect to all
currently grante d patents in th e sam e field of art.
U S 07568096 Page | 1 of 8
R igh ts T h e lik elih o o d of th e patent to be evaluate d m aintaining its exclusive status in a patent d ispute w ith a th ird party.
* Evaluatio n elem e nts o th e r th an th e above 5 evaluatio n elem e nts h ave an influe nce on th e righ ts.
Stre ngth o f P ate nt R igh ts is evaluate d as grad e "A ". Th e num be r o f ind e pe nd e nt claim s is 3, w h ich is
e q ual to o r lo w e r th an th e ave rage, and th e ind e pe nd e nt claim s co nsist o f 293w o rd s, w h ich is gre ate r
th an th e ave rage. Th e claim s co nsist o f a plurality o f claim s.
AEvaluation Elem ents Target Patent A ve rage
R e e xam inatio n 0 1.00
N um be r o f IP R, P G R th at h as be co m e final and co nclusive
0 1.41
R e issue 0 1.00
N um be r o f ind e pe nd e nt claim s
3 3.21
L ength o f ind e pe nd e nt claim s
293 103.98
Reexam ination
Length of�
independent claim s
N um ber of independent claim s Reissue
N um ber of IPR,G RB�
th at h as becom e �
final and conclusive
● R igh ts Evaluation
Tech nology T h e e xte nt to w h ich th e pate nt to be evaluate d co incid e s w ith and le ad s te ch nical tre nd s.
* Evaluatio n elem e nts o th e r th an th e above 5 evaluatio n elem e nts h ave an influe nce on th e te ch nolo gy.
Q uality o f te ch nolo gy is evaluate d as grad e "BBB". Pate nts fo r w h ich applicatio ns w e re file d at m o st5450d ay(s) afte r th e filing d ate o f th e pate nt to be evaluate d are includ e d , and 21 pate nts cite s th e pate ntto be evaluate d . Th e C P C m ain gro up in w h ich th e pate nt is includ e d sh o w s a d e cre ase in U .S. pate ntsco m pare d w ith o th e r gro ups. Th e cite d re fe re nce s includ e a pape r, sh o w ing co incid e nce w ith te ch nicaltre nd s. R e fe re nce s cite d by pate nts to w h ich re fe re nce is m ad e includ e pape rs and fo re ign pate nts. Th e reis 1 continuatio n applicatio n. It is a pate nt th at w as jo intly invente d by 3 invento rs.
BBBEvaluation Elem ents Target Patent A ve rage
N um be r o f d raw ings 0 11.18
Incre ase/d e cre ase rate o f U S pate nts und e r
C P C level-0.9 -0.59
To tal num be r o f fo rw ard citatio ns
21 12.10
N um be r o f pape rs in fo rw ard citatio ns
7,679 884.89
N um be r o f co ntinuatio n applicatio ns
1 2.96
N um ber of draw ings
N um ber of�
continuation�
applications
N um ber of papers in forw ard citations Total num ber of forw ard citations
Increase/decrease�
rate of U S patents �
under CPC level
● Tech nology Evaluation
U S 07568096 Page | 2 of 8
U sability
A AEvaluation Elem ents Target Patent A ve rage
N um be r o f R C E 0 1.21
N um be r o f co untrie s w ith fo re ign fam ily
pate nts15 2.80
N um be r o f IP R, P G R th at is pend ing
0 1.29
N um be r o f IP C 1 1.57
A ssigne e ch ange 1 1.26
Th e extent to w h ich th e patent to be evaluate d w ill be use d in busine ss and th e pro bability of th e patent
be ing use d in busine ss.
* Evaluatio n elem e nts o th e r th an th e above 5 evaluatio n elem e nts h ave an influe nce on th e utiliz atio n.
U sab ility is evaluate d as grad e "A A ". A nnuity fe e s up to th e ye ar 10 h ave be e n paid . Since fo re ign
applicatio ns relate d to th e pate nt to be evaluate d w e re file d in 15co untrie s, th e applicab ility in a busine ss
is h igh . 1 IP C is includ e d . Th e righ t h o ld e r h as ch ange d 1 tim e s.
● U tiliz ation Evaluation
N um ber of RCE
A ssignee ch ange
N um ber of IPC N um ber of IPR, PG R th at is pending
N um ber of countries�
w ith foreign fam ily�
w ith foreign fam ily�
patents
W IPO 's analysis of percentile rank ratio by classification of tech nology
Evaluatio n Ind e xC ate go ry(ele ctric/ele ctro nic/IT)
[1,529,696]
Divisio n(ele ctric/ele ctro nic/IT)
[1,467,894]
S e ctio n(d igital co m m unicatio n)
[93,421]
To tal (100) 4.3% 4.2% 4.9%
Stre ngth o f P ate nt R igh t (35) 19.9% 19.7% 21.3%
Q uality o f Te ch nolo gy (35) 35.4% 35.1% 39.5%
U sab ility (30) 4.2% 4.2% 5.3%
* A ratio o f ele ctric/ele ctro nic/ITte ch no lo gy classificatio n o f co m pre h e nsive evaluatio n d e no te s th e to p 4.3%
U S 07568096 Page | 3 of 8
M ain patent inform ation
R e pre se ntative F igure R e pre se ntative C laim
1. A co m pute r im plem e nte d m e th o d fo r re nd e ring
e ncrypte d d igital co nte nt on a co m puting d evice in
acco rd ance w ith a ch ain o f lice nse s, e ach lice nse in th e
ch ain o f lice nse s h aving an asso ciate d se t o f rule s th at
m ust be satisfie d to allo w th e encrypte d d igital co nte nt to
be re nd e re d , th e m e th o d co m prising: re ce iving a re q ue st
to re nd e r th e co nte nt, th e co nte nt h aving a link id e ntifie r
id e ntifying a first lice nse asso ciate d w ith th e co nte nt;
lo cating th e ch ain o f lice nse s co rre spo nd ing to th e
co nte nt, th e ch ain includ ing th e first lice nse link e d to th e
co nte nt at one end o f th e ch ain, a ro o t lice nse at th e o th e r
e nd o f th e ch ain no t h aving a link id e ntifie r, and any
inte rm e d iate lice nse s th e re b e tw e e n, th e first lice nse and
any inte rm e d iate lice nse s in th e ch ain e ach co m prising a
link id e ntifie r id e ntifying th e ad jo ining lice nse in th e ch ain
to w ard th e ro o t lice nse and th e ro o t lice nse bo und to an
o w ne r o f a private k e y (PR-U ), w h e re in lo cating th e ch ain
o f lice nse s co m prise s: id e ntifying th e link id e ntifie r
asso ciate d w ith th e co nte nt; find ing th e first lice nse on th e
co m puting d evice asso ciate d w ith th e id e ntifie d link
id e ntifie r; ve rifying th e fo und first lice nse and co nfirm ing
th at a rule asso ciate d w ith th e first lice nse pe rm its th e
re nd e ring o f th e co nte nt; id e ntifying th at th e fo und first
lice nse h as an uplink id e ntifie r; and re pe ate d ly: find ing an
(x)th lice nse on th e co m puting d evice h aving th e uplink
co nte nt id e ntifie r o f th e fo und (x1)th lice nse; ve rifying th e
fo und (x)th lice nse and co nfirm ing th at th e fo und (x)th
lice nse pe rm its th e re nd e ring o f th e co nte nt; and
d e te rm ining w h e th e r th e fo und (x)th lice nse h as an uplink
id e ntifie r; until it is d e te rm ine d th at th e fo und (x)th lice nse
d o e s no t h ave an uplink id e ntifie r and is th e re fo re th e ro o t
lice nse; and upo n d e te rm ining e ach lice nse in th e ch ain o f
lice nse s is ve rifie d and th e rule s o f e ach lice nse in th e
ch ain are satisfie d , o btaining a crypto graph ic k e y fo r
d e crypting th e co nte nt fro m th e first lice nse, com prising:
o btaining fro m th e ro o t lice nse a link k e y K L(x1) of th e
ad jo ining (x1)th lice nse to w ard th e first lice nse encrypte d
acco rd ing to a public k e y P U -U to re sult in P U -U (K L(x1));
applying a private k e y P R-U co rre spo nd ing to P U -U to
P U -U (K L(x1)) to reve al K L(x1); fo r e ach fo und lice nse in th e
ch ain be tw e e n th e first lice nse and th e ro o t lice nse, and in
o rd e r fro m th e ro o t lice nse to th e first lice nse: o btaining
fro m th e (x)th lice nse a link k e y o f th e ad jo ining (x1)th
lice nse to w ard th e first lice nse K L(x1) encrypte d acco rd ing
to a link k e y o f th e (x)th lice nse K L x to re sult in K L x(K L(x1));
and applying K L x to K L x(K L(x1)) to reve al K L(x1), K L x be ing
reve ale d in co nne ctio n w ith th e (x+1)th lice nse in th e
ch ain; until K L 1 is reve ale d; o btaining fro m th e first
lice nse a co nte nt k e y K D fo r d e crypting th e co nte nt
e ncrypte d acco rd ing to K L 1 to re sult in K L 1 (K D); and
applying K L 1 to K L 1 (K D) to reve al K D; and applying K D
to th e encrypte d co nte nt to d e crypt sam e.
O w ne rsh ip C h ange Info rm atio n
U S 07568096 Page | 4 of 8
N O O w ne r Date of ch ange
1 M IC R O SO F T C O R P O R A TIO N , W A SH IN G TO N 2004.04.22
R elate d L itigatio n
N O C ontent Date
F am ily Info rm atio n
N O F am ily patent num be r F iling d ate C ountry
1 A T463799T 2005.04.08 A ustria
2 TW I366370B 2005.04.08 Taiw an, Province of C h ina
3 EP1594034A 2 2005.04.08 European Patent O ffice (EPO )
4 DE602005020385D1 2005.04.08 G e rm any
5 A U 2005201572A 1 2005.04.14 A ustralia
6 Z A 200503017A 2005.04.14 South A frica
7 BR P I0501325A 2005.04.18 Braz il
8 M Y 141648A 2005.04.18 M alaysia
9 C A 2504677A 1 2005.04.21 C anad a
10 R U 2378772C2 2005.04.21 Russian F e d e ration
11 R U 2005112059A 2005.04.21 Russian F e d e ration
12 M X P A 05004270A 2005.04.21 M exico
13 C N 100588152C 2005.04.22 C h ina
14 K R20060047417A 2005.04.22 R epublic of K o re a
15 K R100992787B1 2005.04.22 R epublic of K o re a
16 JP4741278B2 2005.04.22 Japan
17 JP2005322227A 2005.04.22 Japan
18 C N 1691579A 2005.04.22 C h ina
19 H K 1083901A 1 2006.03.28
Th e H ong K ong Special
A d m inistrative R egion of th e
P e ople's R epublic of C h ina
F o rw ard C itatio n Info rm atio n
N O P atent N o C ountry Title of Th e Invention F iling Date A pplicant R igh t h old e r
1 U S9224168B2 U S tuning pro d uct pol... 2012.12.11M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
2 U S8640260B2 U S m eth o d s, system s a... 2012.05.11A T&T IN TEL L EC TU A L
PR O PER TY I R A K U TEN , IN C.
3 U S9336359B2 U S d evice certificate... 2012.02.06M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
4 U S9084031B2 U S content license st... 2010.12.13M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
5 U S8191165B2 U S m eth o d s, system s, ... 2010.12.08A T&T IN TEL L EC TU A L
PR O PER TY I R A K U TEN , IN C.
6 U S8781969B2 U S e xtensible m e d ia r... 2010.07.13 M IC R O SO F T M IC R O SO F T
7 U S8719171B2 U S issuing a publish e... 2010.07.08 M IC R O SO F TM IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
8 U S9424399B2 U S availability of pe... 2009.05.12M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
9 U S9189605B2 U S protecte d com putin... 2009.02.23M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
10 U S8700535B2 U S issuing a publish e... 2008.03.21 M IC R O SO F TM IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
11 U S7877813B2 U S copy protection m e... 2007.07.26 L G EL EC TR O N IC S. IN C. L G ELEC TR O N IC S. IN C.
12 U S7874015B2 U S m eth o d s, system s, ... 2006.05.12A T&T IN TEL L EC TU A L
PR O PER TY I R A K U TEN , IN C.
13 U S9436804B2 U S e stablish ing a uni... 2005.09.15M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
14 U S8336085B2 U S tuning pro d uct pol... 2005.09.12 M IC R O SO F T M IC R O SO F T
15 U S8176564B2 U S special pc m od e en... 2005.06.14 M IC R O SO F T M IC R O SO F T
16 U S8353046B2 U S system and m eth o d ... 2005.06.08 M IC R O SO F T M IC R O SO F T
U S 07568096 Page | 5 of 8
17 U S9363481B2 U S protecte d m e d ia pi... 2005.04.27M IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N M IC R O SO F T
18 U S8438645B2 U S secure clock w ith ... 2005.04.27 M IC R O SO F T M IC R O SO F T
19 U S8725646B2 U S output protection ... 2005.04.15 M IC R O SO F TM IC R O SO F T TEC H N O L O G Y
L IC EN SIN G , L L C., W A SH IN G TO N
20 U S8464348B2 U S isolate d com puting... 2004.12.22 M IC R O SO F T M IC R O SO F T
21 U S8347078B2 U S d evice certificate... 2004.12.20 M IC R O SO F T M IC R O SO F T
U S 07568096 Page | 6 of 8
A nalysis of a percentile rank ratio by C PC
H P H Y S IC S 915,853
H 04 C O M P U T IN G ; C A L C U L A T IN G ; C O U N T IN G (sco re co m pute rs f... 419,433
H 04L ELEC TR IC A L DIG IT A L DA T A P R O C ESS IN G (com pute rs in w h ic... 290,648
A PPEN DIX I
Evaluation Ind e x H H 04 H 04L
Strength of Patent R igh t 28.9% 21.1% 19.4%
Q uality of Tech nology 48.4% 36.0% 34.3%
U sability 5.1% 3.4% 3.1%
Total 6.2% 3.6% 3.2%
* A ratio o f ele ctric/ele ctro nic/IT te ch nolo gy classificatio n o f co m pre h e nsive evaluatio n d e no te s th e to p 6.2%
* R e sults o f analysis o f a to p ratio base d on evaluatio n re sults o f a m o d el co rre spo nd ing to th e W IP O 's te ch nolo gy classificatio n
U S 07568096 Page | 7 of 8
C ountrie s in w h ich patent evaluation is to be perfo rm e d A patent inform ation provid e r and an evaluation cycle
A pate nt info rm atio n provid e r A n evaluatio n cycle
K o re an Intelle ctual P ro pe rty
U S P ate nt O ffice
Euro pe an P ate nt O ffice
Stand ard Esse ntial P ate nt C e nte r
F irst m o nth
o f evaluatio n
3 m onth s afte r th e
patent publication
d ate
A n evaluatio n
cycleM o nth ly
Date on w h ich report is w ritten
Date on w h ich a clie nt w rite s th e pate nt evaluatio n re po rt
Patent evaluation d ate Date on w h ich m o nth ly evaluatio n re sults are m ad e
Evaluation M o d el
K R
C o nstructio n as a structural e quatio n m o d el base d on an e xpe rt surve y on im po rtance o f pate nt info rm atio n
A m o d el in w h ich co nfirm ato ry facto r analysis o f th e structural e quatio n m o d elis co m b ine d w ith path analysis, and a causal relatio nsh ip be tw e e n a plurality o f ind e pe nd e nt variable s and a plurality o f d e pe nd e nt variable s is analyz e d .
U S
EU
C o nstructio n as a m ultiple re gre ssio n analysis m o d el in w h ich a k e y evaluatio n facto r fo r e ach evaluatio n ind e x is use d as a d e pe nd e nt variable
T h e m ultiple re gre ssio n analysis is a m e th o d in w h ich an e xte nt o f th e inte rco nne ctivity be tw e e n a d e pe nd e nt variable and tw o o r m o re ind e pe nd e nt variable s is analyz e d .
W IP O Tech nology
C lassification
T h e W IP O provid e s a table in w h ich tech nolo gy is classifie d as electricity/electro nics/IT,
m ech anical tech nolo gy, ph ysical m ate rials, ch e m istry, and bio te ch nolo gy, and th e co rre spo nd ing
tech nical classificatio n is m appe d to th e IP C co d e.
Stanine R atioStanine is a type o f no rm aliz e d stand ard sco re grante d base d on a nine-po int stand ard
acco rd ing to a d e te rm ine d ratio.
Evaluation O vervie w
A PPEN DIX II
N o Evaluation Elem ents(unit)
1U S patent grow th rate und e r
th e C PC level
2 Inte rfe rence
3 IP C
4 R C E
5 R e e xam ination
6 R e issue
7 IP R, PG R in pend ing
8 C ontinuing application
N o Evaluation Elem ents(unit)
9 C h ange in ow ne rsh ip
10Th e num be r of d raw ing
sh e ets
11Th e length of ind epend ent
claim s
12Th e num be r of ind epend ent
cliam s
13Detaile d d e scription of th e
invention
14 Th e num be r of inventors
15 L e gal proce e d ing
16N th year afte r th e d ate of
grant
N o Evaluation Elem ents(unit)
17 P rio rity exam ination reque st
18 Backw ard citations (th e sis)
19 A ve rage age of citations
20 Info rm ation provision
21G rant of patent term
extension
22Th e average d epth of th e d epend ent claim s
23 Type of claim
24 forw ard citations
N o Evaluation Elem ents(unit)
25 Stand ard essential patent
26F iling d ate d iffe rence in forw ard citation
27 F o rw ard citations (th e sis)
28C onclud e d re e xam ination
proce e d ings
29Patent fam ily inform ation
(state s)
Evaluation Elem ents
N ote
� Th e evaluation rating in th is report is calculated using th e structural equation or m ultiple regression analysis m od el based on evaluation elem ents th at
becom e conclusive and final th rough repeated verification of K orean and overseas patent experts on th e basis of objective inform ation provid ed from
patent inform ation provid ers such as th e K IPO .
� W h ile th is repo rt m ay be use d fo r efficient m anagem ent of patents fo r refe rence, ne ith e r th e K IP O no r th e K IP A guarante e s o r take s
responsibility fo r use of th is repo rt as official evid ence w ith re spect to actual m ark et value, ro yaltie s, invalid ation or infringem ent.
� Th is report is a w ork of th e K IPA , and all righ ts are reserved by th e K IPA . A lso, th is report sh all not be d istributed, duplicated, cited, m od ified
or reprinted w ith out consent of th e K IPA .
U S 07568096 Page | 8 of 8