Note 6 — License and Collaboration Agreements

We have entered into various license agreements and collaborative research, development and commercialization agreements with pharmaceutical and biotechnology companies. Under these arrangements, we are entitled to receive license fees, upfront payments, milestone payments when and if certain development or regulatory milestones are achieved, royalties, sales milestones when and if certain annual sales levels are achieved, payment for the manufacture and supply of our proprietary PEGylation materials and/or reimbursement for research and development activities. All of our collaboration agreements are generally cancelable by our partners without significant financial penalty. Our costs of performing these services are generally included in research and development expense.

In accordance with these agreements, we recognized license, collaboration and other revenue as follows (in thousands):


		Three months ended March 31,
Partner	Agreement	2012		2011
Affymax, Inc.	OMONTYS^®	$	2,217	$	451
Hoffmann — La Roche	PEGASYS^® and MIRCERA^®		1,380		1,283
Amgen, Inc.	Neulasta^®		1,250		1,250
Bayer Healthcare LLC	BAY41-6551 (Amikacin Inhale)		742		750
Baxter Healthcare	Hemophilia		684		368
Other			1,554		2,404

License, collaboration, and other revenue		$	7,827	$	6,506

As of March 31, 2012, our collaboration agreements with partners included potential future payments for development milestones totaling approximately $172.1 million, including amounts from our agreements with Bayer and Baxter described below. In addition, we are entitled to receive up to $235.0 million and $75.0 million of contingent payments described below related to NKTR-118 and NKTR-119, respectively, based on development and regulatory events to be pursued and completed solely by AstraZeneca.

Affymax, Inc.: OMONTYS®

In April 2004, we entered into a license, manufacturing and supply agreement with Affymax, Inc. (Affymax) under which we provided Affymax with a worldwide, non-exclusive license under certain of our proprietary PEGylation technology to develop, manufacture and commercialize OMONTYS^® (peginesatide). On March 27, 2012, the U.S. Food and Drug Administration (FDA) approved OMONTYS^® to treat anemia in patients with chronic kidney disease on dialysis. Under our agreement, Affymax is obligated to purchase its entire requirements of the proprietary PEGylation materials required to manufacture OMONTYS^® exclusively from Nektar. Affymax is responsible for all clinical development, regulatory and commercialization expenses. We are entitled to royalties based on annual worldwide net sales of OMONTYS^®. For a certain period of time, we will share a portion of our future royalty payments with Enzon Pharmaceuticals, Inc.

In addition, as a result of the FDA's approval of OMONTYS^®, we earned a $2.0 million milestone. Under our milestone method revenue recognition policy, this substantive milestone was recognized in its entirety upon achievement in March 2012. We have previously received other milestone and related payments under our agreement with Affymax and, as of March 31, 2012, we have deferred revenue of approximately $7.7 million related to this agreement, which we expect to recognize through March 2022, the estimated period through which we are required to provide manufacturing and supply services.

F. Hoffmann- La Roche Ltd and Hoffmann-La Roche Inc.: PEGASYS® and MIRCERA®

In February 1997, we entered into a license, manufacturing and supply agreement with F. Hoffmann-La Roche Ltd and Hoffmann-La Roche Inc. (Roche), under which we granted Roche a worldwide, exclusive license to certain intellectual property related to our proprietary PEGylation materials used in the manufacture and commercialization of PEGASYS^®. As a result of Roche exercising a license extension option in December 2009, Roche has the right to manufacture all of its requirements for our proprietary PEGylation materials for PEGASYS^® and we perform additional manufacturing, if any, only on an as-requested basis. In connection with Roche's exercise of the license extension option in December 2009, we received a payment of $31.0 million. As of March 31, 2012, we have deferred revenue of approximately $19.2 million related to this agreement, which we expect to recognize through December 2015, the period through which we are required to provide back-up manufacturing and supply services on an as-requested basis.

In February 2012, we entered into a toll-manufacturing agreement with Roche under which we will manufacture the proprietary PEGylation material for MIRCERA^®. Roche entered into the toll-manufacturing agreement with the objective of establishing us as a secondary back-up source on a non-exclusive basis. Under the terms of the toll-manufacturing agreement, Roche agreed to pay us an up-front payment of $5.0 million plus a total of up to $22.0 million in performance-based milestone payments upon our achievement of certain manufacturing readiness, validation and production milestones, including the delivery of specified quantities of PEGylation materials, all of which are scheduled to be completed by the end of January 2013. There is a risk that we will not meet one or more of the milestones on a timely basis or at all. Roche will also pay us additional consideration for any future orders of the PEGylation materials for MIRCERA^® beyond the initial quantities scheduled to be manufactured and supplied in 2012 and 2013. Roche may terminate the toll-manufacturing agreement due to an uncured material default by us or for convenience under certain circumstances and subject to certain financial obligations. As of March 31, 2012, we have received the $5.0 upfront payment and earned an additional $3.0 milestone payment. We expect that we will be able to successfully complete all of the milestones. As a result, we have identified our back-up manufacturing obligation through December 2016 and the delivery of PEGylation materials specified in the agreement in 2012 and early 2013 as the units of accounting in the arrangement. We made our best estimate of the selling prices for these deliverables and have allocated the expected $27.0 million consideration to these items based on the relative selling price method. As of March 31, 2012, we have recognized revenue of $0.1 million and deferred revenue of approximately $7.9 million, which we expect to recognize through December 2016, the estimated end of our obligations under this agreement.

Amgen, Inc.: Neulasta®

In October 2010, we amended and restated an existing supply and license agreement by entering into a supply, dedicated suite and manufacturing guarantee agreement (the amended and restated agreement) and a license agreement with Amgen Inc. and Amgen Manufacturing, Limited (together referred to as Amgen). Under the terms of the amended and restated agreement, we guarantee the manufacture and supply of our proprietary PEGylation materials (Polymer Materials) to Amgen in an existing manufacturing suite to be used exclusively for the manufacture of Polymer Materials for Amgen (the Manufacturing Suite) in our manufacturing facility in Huntsville, Alabama (Facility). This supply arrangement is on a non-exclusive basis (other than the use of the Manufacturing Suite and certain equipment) whereby Nektar is free to manufacture and supply the Polymer Materials to any other third party and Amgen is free to procure the Polymer Materials from any other third party. Under the terms of the amended and restated agreement, we received a $50.0 million payment in the fourth quarter of 2010 in return for our guaranteeing the supply of certain quantities of Polymer Materials to Amgen including without limitation the Additional Rights described below and manufacturing fees that are calculated based on fixed and variable components applicable to the Polymer Materials ordered by Amgen and delivered by us. Amgen has no minimum purchase commitments. If quantities of the Polymer Materials ordered by Amgen exceed specified quantities, significant additional payments become payable to us in return for our guaranteeing the supply of additional quantities of the Polymer Materials.

The term of the amended and restated agreement ends on October 29, 2020. In the event we become subject to a bankruptcy or insolvency proceeding, we cease to own or control the Facility, we fail to manufacture and supply or certain other events, Amgen or its designated third party will have the right to elect, among certain other options, to take title to the dedicated equipment and access the Facility to operate the Manufacturing Suite solely for the purpose of manufacturing the Polymer Materials (the Additional Rights). Amgen may terminate the amended and restated agreement for convenience or due to an uncured material default by us.

As of March 31, 2012, we have deferred revenue of approximately $42.9 million, which we expect to recognize through October 2020, the estimated end of our obligations under this agreement.

Bayer Healthcare LLC: BAY41-6551 (Amikacin Inhale)

In August 2007, we entered into a co-development, license and co-promotion agreement with Bayer Healthcare LLC (Bayer) to develop a specially-formulated inhaled Amikacin. We are responsible for development and manufacturing and supply of the nebulizer device included in the Amikacin product. Bayer is responsible for most future clinical development and commercialization costs, all activities to support worldwide regulatory filings, approvals and related activities, further development of Amikacin Inhale and final product packaging and distribution. We received an upfront payment of $40.0 million in 2007 and performance milestone payments of $20.0 million, of which $10.0 million will be used to reimburse Bayer for Phase 3 clinical trial costs. We are entitled to up to $60.0 million of development milestones upon achievement of certain development objectives, as well as sales milestones upon achievement of annual sales targets and royalties based on annual worldwide net sales of Amikacin Inhale. As of March 31, 2012, we have deferred revenue of approximately $26.7 million, which we expect to recognize through July 2021, the estimated end of our obligations under this agreement.

Baxter Healthcare: Hemophilia

In September 2005, we entered into an exclusive research, development, license and manufacturing and supply agreement with Baxter Healthcare SA and Baxter Healthcare Corporation (Baxter) to develop products designed to improve therapies for Hemophilia A patients using our PEGylation technology. In December 2007, we expanded our agreement with Baxter to include the license of our PEGylation technology with the potential to improve any future products Baxter may develop for Hemophilia B patients. Under the terms of the agreement, we are entitled to research and development funding and are responsible for supplying Baxter with its requirements for our proprietary materials. Baxter is responsible for all clinical development, regulatory, and commercialization expenses. The agreement is terminable by the parties under customary conditions. As of March 31, 2012, we are entitled to up to $28.0 million and $11.0 million of development milestones related to Hemophilia A and Hemophilia B, respectively, upon achievement of certain development objectives, as well as sales milestones upon achievement of annual sales targets and royalties based on annual worldwide net sales of products resulting from this agreement. We received upfront payments in 2005 and 2007 totaling $9.0 million and, as of March 31, 2012, we have deferred revenue from these payments of $5.5 million, which we expect to recognize through December 2027, the estimated end of our obligations under this agreement.

AstraZeneca AB: NKTR-118 and NKTR-119

In September 2009, we entered into a License Agreement with AstraZeneca AB, a Swedish corporation (AstraZeneca), under which we granted AstraZeneca a worldwide, exclusive, perpetual, royalty-bearing, and sublicensable license under our patents and other intellectual property to develop, market, sell and otherwise commercially exploit NKTR-118 and NKTR-119. AstraZeneca is responsible for all costs associated with research, development and commercialization and controls all drug development and commercialization decisions for NKTR-118 and NKTR-119. AstraZeneca paid us an upfront payment of $125.0 million, which we received in the fourth quarter of 2009 and which was fully recognized as of December 31, 2010. We are entitled to receive up to $235.0 million and $75.0 million of contingent payments related to NKTR-118 and NKTR-119, respectively, based on development events to be pursued and completed solely by AstraZeneca. In particular, if AstraZeneca files for regulatory approval of NKTR-118 with the FDA and the European Medicines Agency (EMA), Nektar will be entitled to $95.0 million of these milestones. We will be entitled to the remaining $140.0 million of these milestones if NKTR-118 is approved by the FDA and EMA and commercial launch is achieved in the U.S. and one major country in the European Union. In addition, we are also entitled to sales milestones and royalties based on annual worldwide net sales of NTKR-118 and NKTR-119 products. During the three months ended March 31, 2012 and 2011, we did not earn significant revenues from this arrangement.