diff --git a/ietf/templates/ipr/details_view.html b/ietf/templates/ipr/details_view.html
index f1fc7edf0..871e08626 100644
--- a/ietf/templates/ipr/details_view.html
+++ b/ietf/templates/ipr/details_view.html
@@ -124,11 +124,13 @@
         Patent Holder/Applicant ("Patent Holder")</h2>
 
 	  <table class="table-condensed col-md-12">
-	    {% if prev and prev.state.slug == "posted" %}
+	    {% if prev %}
+	    {% if prev.state.slug == "posted" %}
 	    <tr><th class="ipr-prev">Previous (<a href="{% url "ietf.ipr.views.show" id=prev.id %}">#{{prev.id}}</a>)</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% else %}
 	    <tr><th class="ipr-prev">Previous (#{{prev.id}}, {{prev.state}})</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% endif %}
+	    {% endif %}
 	    <tr>
 	      {% if prev %}<td class="col-md-5 ipr-prev">{{ prev.holder_legal_name }}</td>{% endif %}
 	      <th class="col-md-2 ipr-label">Holder legal name</th>
@@ -140,11 +142,13 @@
           <h2>{% cycle section %}. Patent Holder's Contact for Licence Application</h2>
 
 	  <table class="table-condensed col-md-12">
-	    {% if prev and prev.state.slug == "posted" %}
+	    {% if prev %}
+	    {% if prev.state.slug == "posted" %}
 	    <tr><th class="ipr-prev">Previous (<a href="{% url "ietf.ipr.views.show" id=prev.id %}">#{{prev.id}}</a>)</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% else %}
 	    <tr><th class="ipr-prev">Previous (#{{prev.id}}, {{prev.state}})</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% endif %}
+	    {% endif %}
 
 	    <tr>
 	      {% if prev %}<td class="col-md-5 ipr-prev">{{ prev.holder_contact_name }}</td>{% endif %}
@@ -171,11 +175,13 @@
           <h2>{% cycle section %}. Contact Information for the IETF Participant Whose Personal Belief Triggered this Disclosure</h2>
 
 	  <table class="table-condensed col-md-12">
-	    {% if prev and prev.state.slug == "posted" %}
+	    {% if prev %}
+	    {% if prev.state.slug == "posted" %}
 	    <tr><th class="ipr-prev">Previous (<a href="{% url "ietf.ipr.views.show" id=prev.id %}">#{{prev.id}}</a>)</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% else %}
 	    <tr><th class="ipr-prev">Previous (#{{prev.id}}, {{prev.state}})</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% endif %}
+	    {% endif %}
 	    <tr>
 	      {% if prev %}<td class="col-md-5 ipr-prev">{{ prev.ietfer_name }}</td>{% endif %}
 	      <th class="col-md-2 ipr-label">Name</th>
@@ -201,11 +207,13 @@
           <h2>{% cycle section %}. IETF Document or Other Contribution to Which this IPR Disclosure Relates</h2>
 
 	  <table class="table-condensed col-md-12">
-	    {% if prev and prev.state.slug == "posted" %}
+	    {% if prev %}
+	    {% if prev.state.slug == "posted" %}
 	    <tr><th class="ipr-prev">Previous (<a href="{% url "ietf.ipr.views.show" id=prev.id %}">#{{prev.id}}</a>)</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% else %}
 	    <tr><th class="ipr-prev">Previous (#{{prev.id}}, {{prev.state}})</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% endif %}
+	    {% endif %}
 	    <tr>
 
 	      {% if prev %}
@@ -261,11 +269,13 @@
           <p>A. For granted patents or published pending patent applications, please provide the following information:</p>
 
 	  <table class="table-condensed col-md-12">
-	    {% if prev and prev.state.slug == "posted" %}
+	    {% if prev %}
+	    {% if prev.state.slug == "posted" %}
 	    <tr><th class="ipr-prev">Previous (<a href="{% url "ietf.ipr.views.show" id=prev.id %}">#{{prev.id}}</a>)</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% else %}
 	    <tr><th class="ipr-prev">Previous (#{{prev.id}}, {{prev.state}})</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% endif %}
+	    {% endif %}
 	    <tr>
 	      {% if prev %}<td class="col-md-5 ipr-prev">{{ prev.patent_info|linebreaks }}</td>{% endif %}
 	      <th class="col-md-2 ipr-label">Patent, Serial, Publication, Registration, or Application/File number(s)</th>
@@ -276,11 +286,13 @@
           <p>B. Does this disclosure relate to an unpublished pending patent application?:</p>
           
 	  <table class="table-condensed col-md-12">
-	    {% if prev and prev.state.slug == "posted" %}
+	    {% if prev %}
+	    {% if prev.state.slug == "posted" %}
 	    <tr><th class="ipr-prev">Previous (<a href="{% url "ietf.ipr.views.show" id=prev.id %}">#{{prev.id}}</a>)</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% else %}
 	    <tr><th class="ipr-prev">Previous (#{{prev.id}}, {{prev.state}})</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% endif %}
+	    {% endif %}
 	    <tr>
 	      {% if prev %}<td class="col-md-5 ipr-prev">{{ prev.has_patent_pending|yesno:"Yes,No" }}</td>{% endif %}
 	      <th class="col-md-2 ipr-label">Has patent pending</th>
@@ -313,11 +325,13 @@
 	  {% endif %}
 
 	  <table class="table-condensed col-md-12">
-	    {% if prev and prev.state.slug == "posted" %}
+	    {% if prev %}
+	    {% if prev.state.slug == "posted" %}
 	    <tr><th class="ipr-prev">Previous (<a href="{% url "ietf.ipr.views.show" id=prev.id %}">#{{prev.id}}</a>)</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% else %}
 	    <tr><th class="ipr-prev">Previous (#{{prev.id}}, {{prev.state}})</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% endif %}
+	    {% endif %}
 	    <tr>
 	      {% if prev %}<td class="col-md-5 ipr-prev">{% if prev.licensing.slug == "provided-later" %}{{ prev.licensing.desc|slice:"2:"|slice:":117" }}){% else %}{{ prev.licensing.desc|slice:"2:" }}{% endif %}</td>{% endif %}
 	      <th class="col-md-2 ipr-label">Licensing</th>
@@ -338,11 +352,13 @@
           <h2>{% cycle section %}. Statement</h2>
 
 	  <table class="table-condensed col-md-12">
-	    {% if prev and prev.state.slug == "posted" %}
+	    {% if prev %}
+	    {% if prev.state.slug == "posted" %}
 	    <tr><th class="ipr-prev">Previous (<a href="{% url "ietf.ipr.views.show" id=prev.id %}">#{{prev.id}}</a>)</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% else %}
 	    <tr><th class="ipr-prev">Previous (#{{prev.id}}, {{prev.state}})</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% endif %}
+	    {% endif %}
 	    <tr>
 	      {% if prev %}<td class="col-md-5 ipr-prev">{{ prev.statement|linebreaks }}</td>{% endif %}
 	      <th class="col-md-2 ipr-label">Statement</th>
@@ -354,11 +370,13 @@
         <h2>{% cycle section %}. Contact Information of Submitter of this Form</h2>
 
 	  <table class="table-condensed col-md-12">
-	    {% if prev and prev.state.slug == "posted" %}
+	    {% if prev %}
+	    {% if prev.state.slug == "posted" %}
 	    <tr><th class="ipr-prev">Previous (<a href="{% url "ietf.ipr.views.show" id=prev.id %}">#{{prev.id}}</a>)</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% else %}
 	    <tr><th class="ipr-prev">Previous (#{{prev.id}}, {{prev.state}})</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% endif %}
+	    {% endif %}
 	    <tr>
 	      {% if prev %}<td class="col-md-5 ipr-prev">{{ prev.submitter_name }}</td>{% endif %}
 	      <th class="col-md-2 ipr-label">Submitter name</th>
@@ -376,11 +394,13 @@
           <h2>{% cycle section %}. Other Notes</h2>
 
 	  <table class="table-condensed col-md-12">
-	    {% if prev and prev.state.slug == "posted" %}
+	    {% if prev %}
+	    {% if prev.state.slug == "posted" %}
 	    <tr><th class="ipr-prev">Previous (<a href="{% url "ietf.ipr.views.show" id=prev.id %}">#{{prev.id}}</a>)</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% else %}
 	    <tr><th class="ipr-prev">Previous (#{{prev.id}}, {{prev.state}})</th><th></th><th>This (#{{ipr.id}})</th></tr>
 	    {% endif %}
+	    {% endif %}
 	    <tr>
 	      {% if prev %}<td class="col-md-5 ipr-prev">{{ prev.notes|linebreaks }}</td>{% endif %}
 	      <th class="col-md-2 ipr-label">Additional notes</th>