, ▁" even ▁when ▁dealing ▁with ▁copy right ed ▁works " ▁according ▁to ▁Cort ell . ▁At ▁the ▁time ▁Cort ell ▁was ▁a ▁teaching ▁assistant ▁on ▁intellectual ▁property ▁at ▁the ▁Univers itat ▁Polit è c nica ▁de ▁Val encia . ▁On ▁May ▁ 4 , ▁ 2 0 0 5 ▁he ▁was ▁forced ▁to ▁res ign , ▁after ▁his ▁very ▁critical ▁talk ▁on ▁Intel lect ual ▁Property . ▁Cort ell ▁eventually ▁gave ▁the ▁talk ▁at ▁the ▁university ▁c af eter ia . ▁ ▁Some ▁months ▁after ▁the ▁incident , ▁the ▁de an ▁admitted ▁that ▁he ▁had ▁been ▁press ured ▁by ▁the ▁Spanish ▁Rec ording ▁Indust ry ▁Association ▁( Prom us ica e ) ▁in ▁a ▁quote ▁to ▁the ▁national ▁newspaper ▁El ▁País , ▁and ▁also ▁by ▁the ▁MP AA ▁as ▁appeared ▁in ▁another ▁newspaper . ▁ ▁Spe ech es ▁ ▁In ▁English ▁▁ 2 0 0 6 - 0 7 - 2 3 ▁New ▁York . ▁HO PE 6 ▁Self ness - Copy f ight : ▁From ▁C ensor ship ▁to ▁New ▁Business ▁Mod els ▁Video ▁and ▁Audio ▁at ▁archive . org ▁sl ides how ▁PDF ▁▁ 2 0 0 5 - 1 1 - 1 7 ▁Os lo , ▁Fac ulty ▁of ▁Engineering , ▁organized ▁by ▁the ▁N U UG . ▁Free ▁culture , ▁P 2 P ▁networks , ▁alternative ▁economic ▁models , ▁and ▁why ▁some ▁people ▁do ▁not ▁want ▁freedom . ▁▁▁▁ 2 0 0 4 - 0 9 - 1 4 ▁Stan ford ▁university . ▁Free ▁culture ▁for ▁all :