Table 2.

Evolution of immunology patents managed under the Patent Cooperation Treaty agreement during 2004–2011, by productive sector.

Year	2004	2005	2006	2007	2008	2009	2010	2011	Total
Private entities	1,247	1,307	1,695	1803	1,548	1,304	963	926	10,793
Universities	215	312	455	508	489	424	340	279	3,022
Hospitals	53	97	91	108	113	66	42	18	588
Others	231	246	290	304	260	285	177	167	1,960
Private entities + universities	23	34	43	40	50	42	31	40	303
Private entities + hospitals	6	16	15	6	12	13	5	4	77
Private entities + others	19	14	15	15	27	39	15	9	153
Universities + hospitals	6	9	8	6	11	7	12	10	69
Universities + others	16	20	27	20	35	26	18	30	192
Hospitals + others	9	8	9	5	4	4	8	2	49
Private entities + universities + hospitals	2	0	0	0	3	0	1	2	8
Private entities + universities + others	4	0	3	2	4	2	3	5	23
Private entities + hospitals + others	1	0	0	0	0	3	0	1	5
Universities + hospitals + others	3	5	2	2	2	3	0	2	19
Private entities + universities + hospitals + others	0	1	0	0	0	0	0	0	1