diamond charles argued november decided april appellee physicians provide abortion services illinois filed class action federal district challenging constitutionality illinois abortion law amended seeking declaratory injunctive relief appellant pediatrician hereafter appellant filed motion intervene party defendant based conscientious objection abortions status pediatrician parent minor daughter district granted motion without indicating whether intervention permissible right ultimately district permanently enjoined enforcement certain provisions law impose criminal liability upon physicians violation prescribed standards care performing abortions requirements furnishing patient particular information appeals affirmed also permanently enjoined enforcement another related provision state appeal filed letter interest rule stating interest identical advanced lower courts essentially coterminous appellant position held appellant lacks judicially cognizable interest illinois abortion law appeal dismissed want jurisdiction pp presence disagreement insufficient meet art iii case controversy requirement party seeking judicial resolution dispute must also show personally suffered actual threatened injury result party allegedly illegal conduct pp illinois letter interest insufficient bring state suit appellant standing defend statute constitutionality state party remains party rule status equate status appellant state failure invoke jurisdiction leaves without case controversy appellee physicians state pp appellant interests enforcement statute permit defend state judicially cognizable interest defending criminal statutes pp appellant claims professional interests confer standing merit pediatrician interest direct stake abortion process abstract concern substitute concrete injury required art iii similarly appellant claim conscientious objection abortion provide judicially cognizable interest maintain appeal capacity parent absent showing daughter currently minor otherwise incapable asserting rights assert constitutional right unborn fetus since state may invoke regulatory measures protect interest power courts measures subject challenge pp neither appellant status intervenor whether permissive right fact district assessed attorney fees state confers standing keep case alive absence state appeal intervenor right continue suit absence party whose side intervention permitted contingent upon intervenor showing satisfies art iii requirements appellant made showing fee award art iii standing requires injury nexus substantive character statute issue fee award bears relation illinois abortion law pp blackmun delivered opinion brennan marshall powell stevens joined part burger rehnquist joined filed opinion concurring part concurring judgment burger rehnquist joined post white concurred judgment dennis horan argued cause appellants briefs victor rosenblum edward grant maura quinlan peter carey argued cause appellees brief colleen connell frank susman janet benshoof nan hunter briefs amici curiae urging reversal filed acting solicitor general fried acting assistant attorney general willard deputy assistant attorney general kuhl john cordes john rogers catholic league religious civil rights steven frederick mcdowell senator gordon humphrey et al robert destro basile uddo briefs amici curiae urging affirmance filed attorney general new york robert abrams pro se robert hermann solicitor general rosemarie rhodes assistant attorney general lawrence kahn sanford cohen martha olson assistant attorneys general american medical association et al benjamin heineman carter phillips newton minow jack bierig stephan lawton joel klein joseph keyes ann allen center constitutional rights et al anne simon nadine taub rhonda copelon judith levin national abortion rights action league et al lynn miller national organization women et al diane thompson planned parenthood federation america et al dara klassel eve paul briefs amici curiae filed women lawyers association los angeles et al susan schwartz carol boyk judith gordon lorraine loder unitarian universalist association et al madeline kochen senator bob packwood et al laurence tribe kathleen sullivan susan bandes et al arthur kinoy justice blackmun delivered opinion appellant eugene diamond pediatrician engaged private practice illinois seeks defend constitutionality four sections illinois abortion law amended sections impose criminal liability performance abortion certain circumstances circumstances require woman provided particular information state illinois chosen absent appeal despite fact statute stake private party whose conduct neither implicated threatened criminal statute judicially cognizable interest statute defense dismiss appeal want jurisdiction october gubernatorial veto illinois legislature amended state abortion law provide increased regulation laws pub act day appellees four physicians provide obstetric gynecologic abortion services illinois filed class action district northern district illinois alleged deprivation rights violation illinois officials charged enforcing abortion law appellees sought declaratory injunctive relief next day district certified plaintiff class temporarily restrained enforcement entire statute november appellant diamond filed motion intervene party defendant either permissively right appointed guardian ad litem fetuses survive abortion motion intervention professed based doctor diamond conscientious objection abortions status pediatrician parent unemancipated minor daughter appellees objection district granted diamond motion intervene district indicate whether intervention permissive right describe diamond interests litigation satisfied requirements federal rule civil procedure intervenor status denied guardianship motion november district entered preliminary injunction number sections abortion law including sections prescribe standard care must exercised physician performing abortion viable fetus possibly viable fetus violator subject term imprisonment three seven years fine exceeding rev ch violator subject term imprisonment two five years fine exceeding rev ch plaintiffs appealed denial preliminary injunction defines term abortifacient requires physician prescribes abortifacient tell patient violator subject term imprisonment days fine exceeding rev ch taken appeals seventh circuit instructed district enter preliminary injunction statutory provisions forced physicians act mouthpiece state theory life charles carey remand district permanently enjoined among others charles carey supp appeal appeals affirmed entry permanent injunction three sections also permanently enjoined enforcement state appeal grant permanent injunction diamond however filed notice appeal jurisdictional statement indicated see supra doctor diamond sole appellant noted probable jurisdiction state office attorney general subsequently filed letter interest invoking rule provides parties proceeding whose judgment appeal taken shall deemed parties letter illinois stated although appellant office attorney general party designated appellee illinois attorney general interest proceeding identical advanced lower courts essentially position issues set forth appellants letter dated july clerk director advocacy office attorney general illinois ii article iii constitution limits power federal courts deciding cases controversies requirement ensures presence concrete adverseness sharpens presentation issues upon largely depends illumination difficult constitutional questions baker carr presence disagreement however sharp acrimonious may insufficient meet art iii requirements consistently required addition party seeking judicial resolution dispute show personally suffered actual threatened injury result putatively illegal conduct party gladstone realtors village bellwood see also warth seldin nature injury central art iii inquiry standing also reflects due regard autonomy likely affected judicial decision exercise judicial power profoundly affect lives liberty property extends valley forge christian college americans separation church state decision seek review must placed hands direct stake outcome sierra club morton placed hands concerned bystanders use simply vehicle vindication value interests scrap iii state illinois invoked appellate jurisdiction sought review appeals decision case controversy requirement met state standing defend constitutionality statute diamond argues illinois letter interest demonstrates state continued concern enforcement abortion law renders state functional equivalent appellant accordingly diamond asserts jurisdictional problem case claim must rejected true party state remains party rule status party equate status appellant appear appellant party must file notice appeal statutory prerequisite invoking jurisdiction see illinois mere expression interest insufficient bring state suit appellant appealing judgment state indicated acceptance decision lack interest defending statute state general interest may adverse interests appellees failure invoke jurisdiction leaves without case controversy appellees state illinois cf princeton university schmid state sought review rule makes clear diamond intervening defendant also entitled seek review enabling file brief merits seek leave argue orally ability ride piggyback state undoubted standing exists state fact appellant absence state capacity case diamond join iv diamond claims interests enforcement permit defend abortion law despite illinois acquiescence appeals ruling unconstitutionality claim also must fail doctor diamond attempts equate position appellees physicians instituted suit district appellees however standing bring suit state officials charged enforcing abortion law appellees faced possible criminal prosecution see doe bolton conflict state officials empowered enforce law private parties subject prosecution law classic case controversy within meaning art iii conflict presented diamond different abortion law held constitutional diamond compel state enforce appellees private citizen lacks judicially cognizable interest prosecution nonprosecution another linda richard see leeke timmerman nlrb see also younger harris bailey patterson cf allen wright asserted right government act accordance law sufficient standing alone confer jurisdiction federal concerns state autonomy deny private individuals right compel state enforce laws apply even greater force attempt private individual compel state create retain legal framework within individual enforcement decisions made state acquiescence appeals determination unconstitutionality serves deprive state power prosecute anyone violating abortion law diamond attempt maintain litigation simply effort compel state enact code accord diamond interests power create enforce legal code civil criminal one quintessential functions state alfred snapp son puerto rico ex rel barez state alone entitled create legal code state kind direct stake identified sierra club morton defending standards embodied code even circumstances private party standing defend constitutionality challenged statute one diamond able assert injury fact physician standing challenge abortion law poses threat criminal prosecution doe bolton see planned parenthood central mo danforth addition physician demonstrates abortion funding regulations direct financial impact practice may assert constitutional rights individuals unable assert rights see singleton wulff diamond attempts assert equivalent interest based upon personal status doctor father protector unborn must reject diamond claims personal professional interests confer standing diamond pediatrician claims abortion law enforced gain patients fewer abortions performed performed result live births law requires physician attempt preserve life aborted fetus implication therefore pool potential patients enlarged possibilities fetuses survive find way patients diamond speculative unadorned speculation suffice invoke federal judicial power simon eastern kentucky welfare rights diamond situation based speculation fees far different physicians wulff supra actual fees limited challenged missouri statute diamond also alleges physician standing litigate standards medical practice applied performance abortions although diamond allegation may cloaked nomenclature special professional interest simply expression desire illinois abortion law written obeyed article iii requires desire vindicate value interests see scrap requires injury fact distinguishes person direct stake outcome litigation even though small person mere interest problem diamond interest direct stake abortion process abstract concern substitute concrete injury required art iii simon eastern kentucky welfare rights similarly diamond claim conscientious objection abortion provide judicially cognizable interest doctor diamond also asserts standing father daughter childbearing years first extent diamond claim derives abortion law parental notification section lacks standing continue litigation address validity provision second extent claims interest ensuring daughter prescribed abortifacient without prior information concern ostensibly triggered invalidation failed show proper person advance claim behalf diamond shown either daughter currently minor otherwise incapable asserting rights diamond failure adduce factual support renders incapable maintaining appeal capacity parent see bender williamsport area school diamond assert constitutional rights unborn fetus state may invoke regulatory measures protect interest state may invoke power courts regulatory measures subject challenge finally diamond asserts standing based two interests relate abortion law involvement litigation neither interest suffices diamond status intervenor whether permissive right confer standing sufficient keep case alive absence state appeal although intervenors considered parties entitled among things seek review mine workers mining smelting intervenor right continue suit absence party whose side intervention permitted contingent upon showing intervenor fulfills requirements art iii see see also bryant yellen recognized certain public concerns may constitute adequate interest within meaning federal rule civil procedure see cascade natural gas el paso natural gas held interest rule provides intervention right requires significantly protectable interest see donaldson however precise relationship interest required satisfy rule interest required confer standing led anomalous decisions courts appeals need decide today whether party seeking intervene district must satisfy requirements rule also requirements art iii continue suit absence illinois diamond must satisfy requirements art iii interests diamond asserted district seeking intervene plainly insufficient confer standing continue suit oral argument diamond stated district assessed attorney fees state jointly severally fee award diamond asserted provided requisite standing litigate case standing real controversy thus parties case real sum money judgment runs favor individual plaintiff physicians case individual defendants intervenors represent tr oral arg valley forge christian college makes clear art iii standing requires injury nexus substantive character statute regulation issue irreducible minimum art iii requires party invokes authority show personally suffered actual threatened injury result putatively illegal conduct defendant gladstone realtors village bellwood injury fairly traced challenged action likely redressed favorable decision simon eastern kentucky welfare rights vi state illinois failing appeal indicated direct interest upholding four sections abortion law issue diamond stepped attempting maintain litigation abandoned state resides lacks judicially cognizable interest abortion law appeal dismissed want jurisdiction ordered footnotes defendants named complaint attorney general state director illinois department public health official capacity state attorney cook county official capacity representative class consisting state attorneys counties state illinois suit state officer official capacity course suit state see kentucky graham district certified defendant class state attorneys charles carey civ day another similar action filed three illinois two illinois clinics provide abortion services two suits consolidated order doctor diamond motion intervene appointment guardian joined doctor jasper williams david campbell doctor williams physician engaged private practice illinois alternative sought appointment guardian ad litem unborn children subject abortion advised doctor williams died april filing notice appeal one substituted campbell sought intervention spouse woman childbearing age file join notice appeal diamond claimed abortion law whole fewer abortions performed performed accordance abortion law designed preserve life aborted fetuses resulting live births diamond also rested motion intervention abortion law provides physician refuses perform abortions based conscientious objections subject liability relied furthermore effect violations abortion law constitute unprofessional conduct provides parental consultation although motion intervene behalf doctor diamond doctor williams campbell see supra district granted leave intervene americans life legal defense fund counsel intervenors diamond preliminary injunction also applied following sections defining viability parental consultation spousal consultation part portion requiring patient told inter alia state illinois wants know view child carrying living human whose life preserved illinois strongly encourages abortion go childbirth abortion subsequent first trimester definition viability prohibition saline amniocentesis first trimester certification nonviability medical indicators abortion fetus viable reporting requirements saline amniocentesis part reporting requirement basis judgment concerning existence medical emergency part third sentence prohibiting experimentation exploitation fetal tissue section provided person intentionally terminates pregnancy fetus known viable shall intentionally fail exercise degree professional skill care diligence preserve life health fetus person required exercise order preserve life health fetus intended born aborted physician person assisting pregnancy termination shall intentionally fail take measures encourage sustain life fetus known viable birth commits class felony death viable fetus infant results failure rev ch section provided person intentionally terminates pregnancy shall intentionally fail exercise degree professional skill care diligence preserve life health fetus person required exercise order preserve life health fetus intended born aborted exists medical judgment physician performing pregnancy termination based particular facts case possibility known sustained survival fetus apart body mother without artificial support physician person assisting pregnancy termination shall intentionally fail take measures encourage sustain life fetus birth guilty class felony death viable fetus infant results failure rev ch section provides abortifacient means instrument medicine drug substance device known cause fetal death employed usual customary use manufactured whether fetus known exist substance device employed rev ch section provides relevant part person prescribes administers instrument medicine drug substance device knows abortifacient fact abortifacient intentionally knowingly recklessly fails inform person prescribed upon administered abortifacient commits class misdemeanor rev ch appeals instructed district also enter preliminary injunction following sections iii defining terms physician perform abortion woman provided least hours abortion defining term physician least hours abortion performed waiver waiting period reporting requirement waiver waiting period defining term true copy pregnancy test result see sections abortion law preliminarily enjoined separate opinion district following remand see charles carey supp purpose rule provide means party notified review sought another party make interests known frequently appellant seek review one party permitting judgment stand others see stern gressman shapiro practice ed ed describing evolution rule rule therefore avoids adjudication rights party absence provide means obtain review absence filing notice appeal proper party title provides appeal writ certiorari intended bring judgment decree civil action suit proceeding review shall taken applied within ninety days entry judgment decree state reasons abandoning suit articulated record noted however pendency case appeals illinois amended abortion law laws pub act time appeals decision based preamendment version abortion law amended sections subject temporary restraining order see keith daley nd appeals declined assess constitutionality amendments rejected challenges mootness based amendments charles daley state inaction may well due concern amended earlier form statutes attack illinois legislature course power create new interests invasion may confer standing case requirements art iii may met see simon eastern kentucky welfare rights diamond purported interest appears rest abortion law provides requirements law constitute standards conduct medical profession since provision neither integrally related sections issue proceeding confer standing diamond diamond claims asserting rights prospective patients survive abortion born handicapping conditions possible diamond asserted claim district basis appointment guardian ad litem unborn fetuses claim rejected district federal rule civil procedure provides intervention applicant claims interest relating property transaction subject action situated disposition action may practical matter impair impede ability protect interest unless applicant interest adequately represented existing parties courts appeals reached varying conclusions whether party seeking intervene right must possess standing compare acres land intervention requires interest excess required standing cert pending sub nom save dunes council southern christian leadership conference kelley app equating interest necessary intervene interest necessary confer standing american tel tel app intervention proper intervenor interest outcome suit different public whole sagebush rebellion watt resolving intervention questions without reference standing doctrine planned parenthood minnesota citizens community action determinative standing claim case diamond responded fee award filing motion dismiss litigation name americans life sole intervenor see supra alternative diamond asked district clarify original intervention order stating aul intervening defendant purposes including assessment attorney fees motion stated aul real party interest assessing fees appellant diamond district stated state defendants intervenors played least equal roles defending abortion statute charles daley apr justice chief justice justice rehnquist join concurring part concurring judgment join judgment part opinion agree much discussion diamond asserted interests defending illinois abortion law satisfy art iii standing requirement write separately however agree reasons rejecting diamond contention illinois presence appellee ensures justiciable controversy us view diamond proper intervenor appeals therefore illinois capacity diamond authorized bring appeal assumes diamond properly bring appeal therefore illinois present appellee rule asserts illinois functional equivalent appellant virtue status party rule ante basis concludes illinois failure invoke jurisdiction leaves without case controversy appellees state illinois ante even illinois interests actually adverse appellees interests believe analysis needlessly inconsistent opinion director owcp perini north river associates holds case properly brought requirement satisfied even parties asserting adverse interests formally aligned adversaries perini employee injured performing job filed claim compensation longshoremen harbor workers compensation act employer denied employee covered act administrative law judge found employer point director office workers compensation programs joined employee appeal benefits review board board affirmed denial coverage employee sought review decision appeals director participated respondent appeals denied employee petition director employee filed petition certiorari employee however file brief support director petition certiorari brief merits certiorari granted employer challenged director standing seek review appeals decision without deciding whether director standing held presence employee party respondent arguing coverage act assures admittedly justiciable controversy basis holding employer concession director proper party respondent appeals proper party appeals director statutory authority seek review authorizes grant certiorari upon petition party see therefore whether director standing director petition brought employee party respondent pursuant rule employee clearly standing actively asserted adverse interests live case controversy presented two important respects case directly analogous perini first provides party relying state statute held appeals invalid repugnant constitution may bring appeal emphasis added consequently diamond proper party appeals statutorily authorized appeal brought case director petition certiorari brought perini second since rule parallels appeals provisions rule cases come way certiorari illinois presence appellee like presence employee perini respondent satisfy requirements live case controversy even party brought case lacks standing therefore disagree apparent conclusion mere fact illinois appellant ends inquiry whether presence assures live case controversy perini fairly distinguishable case however view diamond proper intervenor least appeals consequently party authorized bring appeal appellees contend ntervenor claimed justiciable interest four provisions sought intervene brief appellees courts appeals expressed differing views relationship interest required confer standing interest required intervene rule federal rules civil procedure see ante like find unnecessary decide question challenge diamond standing subsumes challenge sufficiency interest intervenor purposes rule appellees challenged propriety diamond intervention district although raise issue appeals believe may properly considered since perini bears whether justiciable controversy presented diamond proper party appeals appeal clearly improper rule provides person shall permitted intervene action applicant claims interest relating property transaction subject action situated disposition action may practical matter impair impede ability protect interest unless applicant interest adequately represented existing parties emphasis added may permitted intervene action applicant claim defense main action question law fact common exercising discretion shall consider whether intervention unduly delay prejudice adjudication rights original parties emphasis added donaldson held taxpayer entitled intervene right proceeding enforce internal revenue summons directed former employer ordering employer produce records concerning taxpayer use civil investigation taxpayer recognized taxpayer interest records presumably contained details payments employer possessing significance federal income tax purposes nonetheless since interest nothing desire taxpayer overcome employer willingness summons comply produce records held interest kind contemplated rule speaks general terms interest relating property transaction subject action obviously meant significantly protectable interest ibid discern nothing provisions illinois abortion law challenged appeals suggest illinois meant vest physicians parents daughters significantly protectable interest illinois enacted criminal law enforce thereby making violators liable public whole members public might degree benefit law enactment enforcement circumstances seems clear matter interpreting rule state significantly protectable interest undertaking defend standards contained criminal law since indication illinois intended confer legally protectible interest particular beneficiaries law diamond cause helped rule fails satisfy rule requirement remained intact since first adopted applicant claim defense main action question law fact common words claim defense manifestly refer kinds claims defenses raised courts law part actual impending law suit confirmed rule requirement person desiring intervene serve motion stating grounds therefor accompanied pleading setting forth claim defense intervention sought thus although permissive intervention plainly dispenses requirement intervenor shall direct personal pecuniary interest subject litigation sec realty improvement plainly require interest sufficient support legal claim defense founded upon interest satisfies rule commonality requirement diamond simply claim defense sense asserts actual present interest permit sue sued appellees state illinois anyone else action sharing common questions law fact issue litigation analysis affected potential liability attorney fees diamond may subject connection intervention litigation agree liability byproduct suit ante served basis intervention appeals oral argument question raised whether diamond proper intervenor nonetheless considered party attorney fees may awarded prevailing party issue however since award attorney fees uniquely separable cause action merits white new hampshire dept employment security fcc league women voters california proceedings district concerning attorney fees neither contained record us subject questions presented diamond jurisdictional statement accordingly express view whether award attorney fees diamond proper respect proceedings proper intervenor diamond proper intervenor appeals although course open allow file brief amicus curiae accordingly diamond authorized bring appeal appeal must dismissed want jurisdiction