Stephen Lang — 12 Patents at Groupon

Stephen Lang has been granted 12 US patents while listed as an inventor at Groupon. The first was granted in 1988 and the most recent in July 2025. Stephen Lang ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Stephen Lang in Chicago, IL, US.

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12346941	Method, apparatus, and computer program product for determining closing metrics	Brian Mullins, Matt DeLand, Zahra Ferdowsi, John Stokvis, Nolan Finn +1 more	2025-07-01
12026757	Method, apparatus, and computer program product for determining closing metrics	Brian Mullins, Matt DeLand, Zahra Ferdowsi, John Stokvis, Nolan Finn +1 more	2024-07-02	$14,608,000
11120345	Method, apparatus, and computer program product for determining closing metrics	Brian Mullins, Matt DeLand, Zahra Ferdowsi, John Stokvis, Nolan Finn +1 more	2021-09-14	$2,577,000
10558922	Method, apparatus, and computer program product for determining a provider return rate	Brian Mullins, Matt DeLand, Zahra Ferdowsi, John Stokvis, Nolan Finn	2020-02-11	$5,284,000
9330357	Method, apparatus, and computer program product for determining a provider return rate	Zahra Ferdowski, Brian Mullins, Matt DeLand, John Stokvis, Nolan Finn	2016-05-03	$17,364,000
6039972	Wound dressing containing mammalian cells anchored on hydrophobic synthetic polymer film	Yvonne Margaret Barlow	2000-03-21	$3,000
5712137	Laminate of a culture substrate on a carrier for producing an apertured wound dressing	Yvonne Margaret Barlow	1998-01-27
5445604	Wound dressing with conformable elastomeric wound contact layer	—	1995-08-29
5147338	Medicated, low adherency wound dressings	David F. Webster	1992-09-15
4995382	Wound dressing, manufacture and use	David F. Webster	1991-02-26
4860737	Wound dressing, manufacture and use	David F. Webster	1989-08-29
4753231	Adhesive wound dressing	David F. Webster	1988-06-28

Stephen Lang — 12 Patents

Issued Patents All Time

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