{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Microsoft", "item": "https://www.patentleaderboard.com/company/microsoft"}, {"@type": "ListItem", "position": 3, "name": "Gregory Kostal", "item": "https://www.patentleaderboard.com/inventor/fl:gr_ln:kostal-1"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
GK

Gregory Kostal — 14 Patents

Microsoft: 14 patents #2,871 of 40,388Top 8%
Kirkland, WA: #405 of 3,517 inventorsTop 15%
Washington: #7,280 of 76,902 inventorsTop 10%
Overall (All Time): #332,869 of 4,157,543Top 9%
14 Patents All Time
Gregory Kostal has been granted 14 US patents while listed as an inventor at Microsoft. The first was granted in 2007 and the most recent in April 2015. Gregory Kostal ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Gregory Kostal in Kirkland, WA, US.

Patents per Year

Patents granted per year, 2007 to 2015Bar chart with a peak of 3 patents in 2009.peak 32007: 2 patents20072008: 1 patents20082009: 3 patents20092011: 2 patents20112012: 2 patents20122013: 3 patents20132015: 1 patents2015

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
9015493 Multitenant-aware protection service Jason Xiaodong Hu, Daniel Wade Hitchcock 2015-04-21 $29,497,000
8505068 Deriving express rights in protected content Tejas D. Patel, Yuhui Zhong, Vladimir Yarmolenko, Pankaj Mohan Kamat, Krassimir Emilov Karamfilov 2013-08-06 $23,592,000
8447976 Business to business secure mail Chandresh K. Jain, Mayank Mehta, Frank Byrum, Edward Thomas Banti, Ayse Yesim Koman +11 more 2013-05-21 $24,092,000
8448228 Separating authorization identity from policy enforcement identity Yuhui Zhong, Tejas D. Patel, Scott C. Cottrille, Vladimir Yarmolenko, Pankaj Mohan Kamat +5 more 2013-05-21 $24,092,000
8156538 Distribution of information protection policies to client machines Abhijat Kanade, Rushmi U. Malaviarachchi, Peter David Waxman, Yuhui Zhong, Scott C. Cottrille +4 more 2012-04-10 $17,388,000
8141129 Centrally accessible policy repository Kenneth D. Ray, Keith S. Brintzenhofe, Rushmi U. Malaviarachchi, Scott C. Cottrille, Vladimir Yarmolenko +1 more 2012-03-20 $19,292,000
7987496 Automatic application of information protection policies Duncan G. Bryce, Scott C. Cottrille, Pankaj Mohan Kamat, Krassimir Emilov Karamfilov, Kenneth D. Ray +2 more 2011-07-26 $29,172,000
7882035 Pre-performing operations for accessing protected content Scott C. Cottrille, Rushmi U. Malaviarachchi, Jeffrey M. Brown, Umesh R. Dhond, Amit Fulay +5 more 2011-02-01 $15,193,000
7631318 Secure server plug-in architecture for digital rights management systems Scott C. Cottrille, Peter David Waxman, Vinay Krishnaswamy, Chandramouli Venkatesh, Attilla Narin +4 more 2009-12-08 $24,284,000
7509489 Format-agnostic system and method for issuing certificates Muthukrishnan Paramasivam, Ravindra Nath Pandya, Scott C. Cottrille, Vasantha Ravula, Vladimir Yarmolenko +2 more 2009-03-24 $26,092,000
7500097 Extendable data-driven system and method for issuing certificates Muthukrishnan Paramasivam, Ravindra Nath Pandya, Scott C. Cottrille, Vasantha Ravula, Vladimir Yarmolenko +2 more 2009-03-03 $17,333,000
7443985 Systems and methods for providing secure server key operations Vinay Krishnaswamy, Attila Narin, Vladimir Yarmolenko, Scott C. Cottrille 2008-10-28 $20,407,000
7308573 Enrolling / sub-enrolling a digital rights management (DRM) server into a DRM architecture Steve Bourne, Vinay Krishnaswamy 2007-12-11 $51,211,000
7174021 Systems and methods for providing secure server key operations Vinay Krishnaswamy, Attila Narin, Vladimir Yarmolenko, Scott C. Cottrille 2007-02-06 $53,809,000