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| 2. | Clarke, Gavin(20060818)。OSDL Accepts GPL Proliferation，http://www.theregister.co.uk/2006/08/18/gpl_3_torvalds/。 |
| 3. | Fayle, Kevin(20061110)。Free Software Still Legal--Judge，http://www.theregister.co.uk/2006/11/10/gpl_wallace_appeal/。 |
| 4. | Shankland, Stephen(20040801)。Group: Linux potentially infringes 283 patents，http://news.com.com/2100-7344_3-5291403.html。 |
| 5. | Becker, David(20030530)。SCO to Novell: See you in court，http://news.com.com/2100-1016_3-1011627.html。 |
| 6. | Becker, David(20040816)。IBM strikes at SCO claims，http://news.com.com/2100-7344_3-5312087.html。 |
| 7. | OECD(2004)。Patents and Innovation: Trends and Policy Challenges，www.oecd.org/dataoecd/48/12/24508541.pdf.。 |
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| 9. | Marson, Ingrid(20050218)。Europe's patent proposal pending，http://news.com.com/2100-1014_3-5582138.html。 |
| 10. | Kerner, Sean Michael(20041021)。EU Patent Fight Comes to the Fore，http://www.internetnews.com/dev-news/article.php/3425211。 |
| 11. | Wearden, Graeme(20041029)。Software-patent battle set to flare up，http://news.com.com//2100-1014_3-5432364.html。 |
| 12. | Shankland, Stephen(20050131)。Lawyers ride shotgun for open source，http://news.com.com/2100-7344_3-5557962.html。 |
| 13. | Galli, Peter(20050131)。Black Duck Lawyer: Due Diligence Can Help Avoid IP Disputes，http://www.eweek.com/article2/0,1759,1757684,00.asp。 |
| 14. | Evers, Joris(20040930)。Microsoft loses FAT patent, wins Smart Tag case，http://www.infoworld.com/article/04/09/30/HNmsfat_1.html。 |
| 15. | Free Softwre Foundation。Opinion on Patent Retaliation，http://gplv3.fsf.org/patent-dd2.html。 |
| 16. | Shankland, Stephen(20040804)。IBM pledges no patent attacks against Linux，http://news.com.com/2100-7344_3-5296787.html。 |
| 17. | REUTERS NEWS AGENCY(20040420)。No copyright infringement in Linux software, firm says。 |
| 18. | McMillan, Matt。HP to indemnify Linux clients against SCO，http://www.infoworld.com/article/03/09/24/HNhpindemnify_1.html。 |
| 19. | Shankland, Stephen(20050131)。Sun: Patent use OK beyond Solaris project，http://news.com.com/2100-7344_3-5557658.html。 |
| 20. | (20050113)。IBM Proposes a Patent Commons for Royalty--Free Open Source Software Development，http://xml.coverpages.org/ni2005-01-13-a.html。 |
| 21. | Shankland, Stephen(20050110)。IBM offers 500 patents for open-source use，http://news.com.com/2100-7344_3-5524680.html。 |
| 22. | Cerminaro, Anthony。Legal Risks of Open Source Software，http://www.allbusiness.com/blog/StrategicBusinessLawyer/3897/001644.html。 |
| 23. | Kennedy, Dennis(2005)。Best Legal Practices for Open Source Software: Ten Tips For Managing Legal Risks for Businesses Using Open Source Software，http://www.llrx.com/features/opensource.htm。 |
| 24. | Fan, Brian，Aitken, Andrew，Koenig, John。Open Source Intellectual Property and Licensing Compliance: A Survey and Analysis of Industry Best Practice，http://www.osdl.org/docs/olliance___ip_and_licensing_best_practices.pdf。 |