Gevo, Inc. : Gevo Overcomes 110 Rejections in USPTO Reexamination

      Gevo, Inc. : Gevo Overcomes 110 Rejections in USPTO Reexamination

ENGLEWOOD, Colo. - April 11, 2013 - Gevo, Inc. (NASDAQ: GEVO) announced  today 
that the U.S. Patent and Trade Office (USPTO) issued a second office action in
the ongoing inter  partes reexamination  of Gevo's U.S.  Patent No.  8,101,808 
('808 Patent)  entitled  "Recovery  of Higher  Alcohols  from  Dilute  Aqueous 
Solutions", which  relates  to  Gevo's  Integrated  Fermentation  Technology^® 
(GIFT^®). The Examiner's  decision, which  dismissed 110  previous grounds  of 
rejection and introduced a  limited number of new  rejections, is a  non-final 
action called  an  Action  Closing  Prosecution  (ACP),  and  gives  Gevo  the 
opportunity to  respond to  the  limited new  questions  raised by  the  USPTO 

The '808 Patent remains valid  and fully enforceable during the  reexamination 
process. "Gevo will  respond to  the ACP and  is confident  that the  remarks 
presented in the response will be sufficient to overcome the limited number of
new rejections," said Brett Lund, Gevo's executive vice president and  general 
counsel. "Importantly, Gevo was successful in eliminating all of the previous
110 rejections presented in the first office action and the minimal number  of 
new rejections are based on obviousness as opposed to novelty."

Gevo continues to maintain full freedom  to operate worldwide. This ACP  does 
not impact in any way Gevo's ability to commercialize isobutanol, nor does  it 
impact in any way Gevo's operations at its plant in Luverne, MN. Gevo has  an 
additional issued  GIFT^®  patent  that  solidly  protects  Gevo's  isobutanol 
recovery process  in US  Patent No.  8,283,505, entitled  "Recovery of  Higher 
Alcohols for Dilute Aqueous Solutions", issued October 9, 2012.  Furthermore, 
Gevo has  another  issued patent  broadly  covering both  Gevo's  and  Butamax 
Advanced Biofuels LLC's (Butamax's) intended isobutanol recovery processes  in 
US Patent No.  8,304,588, entitled  "Recovery of Higher  Alcohols from  Dilute 
Aqueous Solutions", issued November 6, 2012.

Gevo is  suing Butamax,  a 50/50  joint  venture between  DuPont and  BP,  for 
infringing the '808 Patent. This  case is scheduled to go  to trial in the  US 
District Court of Delaware in July of 2014.

About Gevo

Gevo is a  leading renewable chemicals  and next-generation biofuels  company. 
Gevo's  patent-protected,  capital-light  business  model  converts   existing 
ethanol plants into bio-refineries to make isobutanol. This versatile chemical
can be directly integrated into existing chemical and fuel products to deliver
environmental and  economic benefits.  Gevo started  up its  first  commercial 
isobutanol facility in  Luverne, Minn.,  and has  a marquee  list of  partners 
including Coca-Cola, Sasol, and LANXESS, among others. Gevo is committed to  a 
sustainable bio-based economy  that meets society's  needs for plentiful  food 
and clean air and water. For more information, visit

Forward-Looking Statements

Certain statements  in  this  press release  may  constitute  "forward-looking 
statements" within the meaning of the Private Securities Litigation Reform Act
of 1995.  These forward-looking  statements include  statements that  are  not 
purely statements of historical fact, and  can sometimes be identified by  our 
use of  terms  such  as  "intend,"  "expect,"  "plan,"  "estimate,"  "future," 
"strive" and similar words. These  forward-looking statements are made on  the 
basis of the current beliefs,  expectations and assumptions of the  management 
of Gevo and are  subject to significant risks  and uncertainty. Investors  are 
cautioned not to place undue reliance on any such forward-looking  statements. 
All such forward-looking statements speak only  as of the date they are  made, 
and the company undertakes no obligation to update or revise these statements,
whether as a result of new  information, future events or otherwise.  Although 
the company believes that the expectations reflected in these  forward-looking 
statements  are   reasonable,  these   statements  involve   many  risks   and 
uncertainties that may cause actual results to differ materially from what may
be expressed or  implied in  these forward-looking statements.  For a  further 
discussion of  risks and  uncertainties  that could  cause actual  results  to 
differ from those expressed  in these forward-looking  statements, as well  as 
risks relating to the business of Gevo in general, see the risk disclosures in
the Annual Report on Form  10-K of Gevo for the  year ended December 31,  2012 
and in subsequent reports on  Forms 10-Q and 8-K  and other filings made  with 
the SEC by Gevo.


Media Contact:

Steve Halsey

Gibbs & Soell for Gevo

T: (212) 697-2600 

Investor Contact:

Chelsea DeLong

PR & Marketing Coordinator

T: (303) 588-6306


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Source: Gevo, Inc. via Thomson Reuters ONE
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